Swift Step activates every time i ledge grab :: Hollow Knight: Silksong General Discussions
https://steamcommunity.com/app/1030300/discussions/0/595159120097767833/
Myself and some other people on Linux using the 8BitDo controllers had this issue. If this applies to you, force steam compatibility to Proton 9.0.4 and it should work fine.
Oddly enough, this was my exact situation. There are dozens of us!