League is basically unplayable in its current form.
Busted matchmaking
Busted champions
Ignorant game developers who won't listen to player feedback
Silly decisions (Ignore Sett and Ekko but nerf that Sona for stomping games right?......)
Speaking of which supports are no longer supports. They're superceded by all manner of burst champs (say hi Pyke)
Top is effectively redundant
Unless they're brain-dead and overpush their advantage the bot lane that gets a lead typically snowballs and wins.
Even beating your counter and getting FB can mean a lane loss. You have to strategically NOT KILL the champion that counters you lest they return with TP and equipment and bully you out of the games relevance.
Jungler MMR disparity is a HUGE issue. Got a high MP and a high MMR enemy jungler? Get camped, get 0 help, you become redundant and unable to do anything but watch helplessly as your team loses.
No single person can carry anymore:
You can't augment a losing game by splitting because the minion movement speed buff and canon spawns coupled with low champion respawn timers.
You can't build tank and soak damage for your noob team mates to scale. That used to be a thing!! You COULD influence the games path by getting the enemy to focus you and waste time and abilities. That's gone now!!!!!!
Respawn timers are fucked. There's no cost to a fed carry dying. Even if you kill the fed enemy carry like zed or Ekko or akali or their fed ADC before 40 mins they respawn in less than 30 seconds and continue their rampage on your team
Ult cooldowns have been reduced to nothing. Zed as an example can spam his and chunk any force any non healing orientated champ to play passive whilst he roams (typically bot) and don't get me started on Ekkos ult.....
Yes, this game in its current state it unplayable. It's toxic design actually CREATES toxicity within the community. It's not the players fault they feel frustrated and helpless. It's these issues that make players int/rage/feed/afk and cause everyone mental anguish and stress.
And no one at RIOT cares.