if their playrate is just low due to people perceiving them as bad
Ok but that makes no sense for Yone because his playrate is literally among the highest in the game:
https://www.leagueofgraphs.com/de/champions/stats/yone
And all his other stats are completely fine so this buff is entirely unwarranted. But this patch is for Worlds so yeah....they just want him to be played at Worlds i guess.
An explicit goal of many of these buffs is that we want these champions to be picked at worlds.