His Passive is so unoriginal it's a joke, it's literally just INSANE SUSTIAN on an assassin who doesn't need it. It's just a buffed Tahm Kench E passive.
Actually he does need it, because he has no way of building any form of bonus health or viable way of building bonus resistances.
He gets higher base stats because building lethality is the only thing he can do, if he goes tank he kneecaps his damage output and doesn't even get full benefit from it.
His Q is: A short range nuke with an insane slow, OR a long range pull/flip ALSO with an insane slow.
For starters: They nerfed the bonus damage from his Q, there is no "either or" here. He does the same damage with both parts of his Q.
Secondly, his hook takes a full 3 second charge to reach the same length as a Thresh hook, 1,100 units.
Finally, for Pyke to flip you, you have to be close to him. His hook pulls you a set distance every time depending on the charge, meaning he has to be close to you for you to be flipped behind him. He either gets the "long range hook" (which isn't that long, it's right up there with other abilities like Ezreal/Thresh Q) or he gets the flip. Not both.
His W is Stealth, it enables his passive while in combat, AND is an escape, gives movement speed.
If you stand in his detection radius he doesn't get the regeneration.
His E is a dash with a stun that also does massive damage.
95 / 125 / 155 / 185 / 215 (+ 100% bonus AD)
Is not "massive damage" and also, it's his only reliable escape. On top of that, currently it only damages champions meaning he can't shove waves or solo lane effectively. Also, it's very telegraphed and can be dodged with any sort of mobility, more on that below.
His R is a: AOE ranged execute that scales with AD, deals true damage, does damage to everyone around it, it resets, it shares gold, it dashes him, and you don't even need to land it for it to reset, if someone dies under it you still get the gold and reset.
It's not unavoidable though. It's telegraphed so any sort of dash, blink, heal, stasis, or even MS boost is enough to straight up walk out of it.
In fact, here's a list of every champion who can consistently and effectively dodge Pyke's ult, shutting him down entirely.
Any heal can bring his target out of the ultimate threshold.
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Any dash can evade it.
Any blink can evade it.
Any stasis can stop it.
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Any untargetability can stop it.
Any "disappear" ability can dodge it.
Spellshields can stop it.
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Revivals/undying spells can stop it.
Even certain MS boosts are enough to straight up walk out of his ultimate.
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+ 
The 1 shot combo on Pyke assassin is W -> E -> Tap Q -> R
If Pyke uses that combo and fails on any step, an ally heals his target, an ally boosts his target's MS, the target blinks, the target dashes, the target has a stopwatch, the target has any sort of unique non-death ability, Pyke will just get caught out and die, severely gimping his team's kill power.
If Pyke is fed and you do get hit by that many abilities and you have no bonus health or armor? Yeah, you kind of deserve to die.
The teamfight Pyke is E R R R R R R R R till everything is dead.
And that's what should happen if you don't dodge it.
Does that mean Darius' ult is broken? After all, if he gets 5 stacks or lands a killing blow with his ultimate, he's going to decimate entire teams if they don't do anything about it.
The support pyke is Q E Ignite R R -> double kill
Pyke has plenty of meta counters at the moment, but aside from that; Stand behind minions. Save summoner heal or healing abilities for when he's about to ult. Play an ADC with an escape. Make sure your support is warding bushes and potentially bodyblocking any abilities so you can escape. Don't fight him if he's ahead, all of his abilities are telegraphed meaning you can escape with ease if you don't get locked down by other enemies.
I don't understand why you'd try to use this as an argument though. For starters, it takes way more than two abilities and an ignite to land a double kill. Pyke and his ADC have to consistently autoattack throughout the fight for you to both be in ult range in which you can still dodge it or heal out of it, it's not a guaranteed ability.
It sounds like you (or the person in this example) just misplayed and you're upset about it. If any champion hits you with that, you'll most likely die. Here, I'll use Blitzcrank as an example. Blitzcrank hooks you, knocks you up, ults and ignites you. You're dead! Sounds broken when you don't provide any context or try to play around the champion.
CC in his kit: Q slow, Q pull, Q flip, E stun, Death on R
Mobility in his Kit: W movement speed buff, E dash, R dash
You know what he doesn't have? Two of the most crucial aspects of supporting, he lacks any defensive options for his allies.
If I pick Pyke and the enemy team has a poke comp, looks like my ADC is out of luck. I can't build any item or do anything to help them in or out of laning phase. If they're being focused my only option is to hook or stun them, both of which are telegraphed and can be dodged in any way.
I'm also curious as to why you're not bringing up Sona, Soraka, Janna, or Nami right now. All of them are much stronger than Pyke right now anyway. And on top of that, Pyke is actually weaker right now, meaning he needs some sort of compensation buff, atleast targeted at lower ELOs.
