Is this game slowly being taking over by assassin mains?

(This is in NORMAL games guys, its not that different then ranked)

I can go into a game and have a perfectly reasonable fun game, between two supports and two adcs. Assassin players are just unbearable. They think they are going to be invited to the next worlds or something and think the world owes them great respect for being the 90th I've seen today, build exactly the same way, playing exactly the same way... and yet they have the worst personalities and they act like they are so unique and League is but an anime with their path to Diamond

Why do they take this game so seriously? In other game people like this would be called "sore winners/losers" because they are unable to find the fun and I'm convinced most of them will have a heart attack by the time they reach 30.

Its a strange phenomenon. They act like their parents will beat them if they don't win the game. (Well... most of the world... not naming names Korea) and just will not find the fun in the game.

This is what NORMAL is supposed to be, a respite for people who simple don't care or want to play ranked and yet its flooded by people only taking the best champions that Riot won't deal with rather then playing to their individuality. I see the same champions over and over again and people say that diversity is "high".

Really?

Worst still, I feel that Riot are listening to these people and tailoring the game around them. Creating a toxic atmosphere where people who just want to enjoy the game, can't anymore because there is already somebody that acts like its the last game of Worlds. It IS just a game guys... it doesn't matter.

Where is the Riot that used to apply the Summoners Code?

Humility in Victory, Gracious in Defeat

I want the Riot back that actually encouraged and enforced these values instead of the one that caters the game around such stress and toxicity just to squeeze a few extra pennies out of people.