Ctrl+Shift+(X,C,V) tends to work for many/most terminals in Linux and Windows (including Code and the new Terminal in Windows)...

I agree on the Fn key positioning... I hate it in the corner and tend to zoom in when considering laptops for anyone just in case. I've also had weird arrow keys on the right side in a laptop keyboard where I'd hit the up arrow instead of the right shift a lot in practice... really messed up test area input.

I knew there must be some extra hot key, but like you said, muscle memory.

It's the same thing when switching from a Nintendo to a Western game where the cancel/confirm buttons on the gamepads are swapped.

As a very long-term Linux user, I'm still aggravated when implicit copy and middle-click paste doesn't just work between some apps, since it is so deeply embedded in my muscle memory!