I wouldn't say it makes the category broken, everyone has a keyboard if they're playing on a PC emulator which supports keyboard by default. I understand not everyone wants to use keyboard however but it's the optimal way of playing, you could still get a decent time with a controller though, the difference isn't as big as it seems.

just learn keyboard

I vote yes on this but i mean not everyone has the Adapter like we do (im using the SCPH-1080) and this vs keyboard ...keyboard has much faster response rate

but yes if the cat got split would be interesting but you not really shafing off much the WR is a guy playing with an Xbox One controller on RE1.