You're literally responding to a Diamond+ Mage main.
And? Your point?
If that's the case let's actually have an educated discussion about all of this so we can understand where we're both coming from.
They don't. Landing long range skill shots becomes more reliant on the opponent screwing up and less about aiming, and most assassins have the ability to quickly clear the wave after their first back, while also having zoning tools to give them room to clear the wave.
You do realise wave control and by extension lane control is how a mage wins, right? Assassins win the raw 1v1 fights for sure, but mages can fight on their terms.
Furthermore, you say it becomes less about aiming, but I'd say it becomes more about predicting and sending your skillshots out in a way that creates a shitty situation for your opponent no matter what. Example, you send out an Ahri Q out on an angle so that it hits at least 2-3 minions while also possibly hitting your opponent.
Or, better yet, you send your skillshots out in such a way that you condition your opponent into doing what you want. Kat does this with daggers, mage players can do this with skillshots, albeit their skillshots are not as much of an instant threat.
"...while also having zoning tools to give them room to clear the wave", most assassins do possess this trait, but most, if not all, need to expend their escape and/or be in melee range of the minions to actually do it. That's when you punish them.
You missed the point in the original post: mages cannot take plates unless the enemy jungle's location is known. If you extend that far and an Olaf or Lee Sin is nearby, you're very much dead before you can get back to your turret.
...same to assassins, only worse. Most assassins (besides LB) are melee range champions. If an Olaf or Lee Sin is nearby assassins are usually just as dead as mages.
Okay, this is completely wrong. There's <1% change in pick rate for casters between Platinum and Diamond, and most casters have higher pick rates in Gold. The 15 most common mid picks make up 63% of all picks and contains two casters: Zoe and Cassiopeia.
True, I probably just have some sort of bias because I see mages most of the time in the mid lane...when Yasuo isn't unbanned.
LeBlanc can easily force you out of the lane under the turret with W + Q + R + W or W + Q + E + W timed between turret shots. The others don't need to dive you, but they can kill you if you ever step away from the turret; not even towards the middle of the lane, but just two steps out of turret range.
But you said they could all dive you under tower...Are you now realising that you were generalising and that that is not applicable to all assassins? If so, great, we're finally getting somewhere.
I do agree with your stance on LB, no assassin should be ranged, safe AND oppressive, and she definitely can and does do that to you.
Sure, they can kill you once you're off tower, but you can win the long game through macro, though it's not enjoyable in the slightest. But tbh I'm down for them buffing towers further and reinforcing the playstyle so that even exception cases can't dive you cleanly.
Also, if it's getting that bad that's 100% all on you!
Likewise, they can just bait you into clearing the wave and then freeze it if they don't think they can get a successful roam off at that minute. They're still winning, because the lane is frozen, you can't break the freeze, and you can't roam. You're literally left AFK at your turret, with no options.
Except mages should always be the ones who are freezing the lane, not the assassin(s), so I do not understand where you're coming from here unless you're inexperienced facing assassins.
You say they can bait you into clearing the wave...and yet...why are higher elo players not struggling with this at all? That's the real question.
Even if they do bait you into clearing you can just use that time as an opportunity to back, plant vision, roam with your jungler, the list goes on.
I really do think you're just not going about this the right way.
This is reliant on the assassin fucking up, which is the entire issue. In an equally skilled match up, the Mage does not have the potential to win unless their opponent misplays badly, as well as virtually no room for error. There's a massive handicap in these lanes.
This is just untrue, mages always have the potential win. Yes, there's not going to be much room for error, but that's exactly what happens when you pick a champion that has good range, CC, good damage and general safety+wave control. Mages are not and should never be a class you can just remain 100% safe on just by picking them, that's stupid.
If you whiff your Syndra E in the middle of the lane you deserve to die when you're facing an assassin with mass mobility like Katarina. Why did you miss that in the first place? Why did you go so aggro? Why did you overextend? Why didn't you just focus on the stage in the game where you're strongest. These are all questions you should ask yourself when you die in lane, especially as a mage.
That's not a handicap, that's the matchup dynamic, it's volatile. Look, I'm more than happy to see both classes nerfed until we get to a point where things aren't as volatile, but until then that's just how it is.
All that said, I'm not disagreeing with the OP at all, mages desperately need an update, especially to their homogenous itemisation. Assassins also need reverts at this stage tbh, champs like Kat and Talon are far too explosive in their current iterations.