This is great news, I’m stoked!
You changed the shortcut combination of the new Paste to Replace feature without any notice less than a week after introducing the feature.
Not only that, there’s more to it: you’ve also made this update silently without any actual notice (see Figma Releases page), except perhaps this forum page. Makes sense, since everyone is following this thread here.
Good job again.
And wait, you’ve also made it more difficult: because instead of, say, at least keeping it as a combination of 3 keys, it’s a combination of 4 keys now, because why not?
Since you’re asking, I do have a suggestion.
Let’s change the Ctrl + C shortcut to Copy as SVG, and use Ctrl + Alt + Shift + FN + WinKey + C to Copy stuff, but don’t tell anyone, let users discover this by themselves.
While we’re here, let’s keep changing things around: have the layers panel on a strip at the bottom of the screen, and the tools bar vertical on the left. Even make a playground file so users can adapt, learn and get proficient using this new Figma interface. And then next week just swap them without saying a word because disruptive changes like this are so much fun.