Okay, I see your point now but it's a bit weird for me because having the Ctrl key only for a specific app seems unwise and still less efficient. It's not about Gimp, it's just the terminal that's special.

I've never had an issue with Ctrl+Shift+C. I also don't press Ctrl+C accidentally because I know when I'm using the terminal.

Even on macbook, I don't have issues with accidental presses but I don't like that I have to press an entirely different key on the keyboard to use the terminal.