It hardly depends on the aim assist the game had.
Like in cod warzone you can better play with controller even on PC since you get aim bot not aim assist. The snapping and snapping rate in that game is absolutely ridiculous

I've tried keyboard and mouse back when I was stillk playing on Xbox One and it worked perfectly fine. Games like R6, Fortnite, etc. had never been easier. So idk where you get this from but that certainly wasn't the case for me. Both my house and keyboard worked great with no noticable imput latency or any other thing. Even the onboard profile of my mouse worked.

COD warzone *cough cough* (legit quit that game since the aim assist was literally aimbot and everyone was abusing the shit out of that. Never touched the game ever since then.)

Yeah that's why I went "unfair advantage". If platform allows it you can't really blame the player for using it. I'd probably do the same for some games.

This is like the complete opposite of me. I play one PC but i've been using a controller most of the time these pased couple of months xD

It's a "unfair advantage" against controller players.
Since you can be MUCH more accurate with mouse & keyboard. Though these new consoles just allow it so it's not really "cheating" anymore back on Xbox One and PS4 you had to buy one of those special adapters to be able to use mouse & keyboard.

That indeed not to bad.

The best part of this has to be that that keyboard is probably ridiculously expensive.