Would you prefer Ctrl+V to paste without formatting by default?
github.com
github.com
However the myriad variations on rich text these days make it hard to predict what the actual expected paste result would be.
I'm going to implement this for Windows at least, as a part of the tool I maintain (https://github.com/postprintum/devcomrade). I plan to use Windows Clipboard API to strip the rich formatting in-place, as it gets copied into the clipboard. Then it can be pasted using whatever the default hotkey or UI is.
Does it sound reasonable?