Riot is just getting lazier and lazier.
My opinion is that they're getting lazier the more time passes. I mean, look at the patch notes for 9.15, It's basically "Give damage to champions that don't need it", they are not fixing the problem like it should be anymore, they just see a champion falling out, but they don't even try to see why, they just give it damage, not to mention sometimes they just buff things in weird way (Renekton's shield breaking mechanic, and Vayne). Also, the game was never this bugged before. The broken hitboxes, the unfinished animations on newer releases, the glitches, even on pbe, there's just a part of the new project skins trailer, let alone that they mostly just gave up on login screens. They are now focusing on what's easier to do (except skins, but they bring money, so give that kai'sa a new skin, AND DON'T FORGET ABOUT LUX!). They say the game is being balanced around pro play, but heck, they don't even listen to pro players.