> First, Emacs should have sensible defaults like Ctrl-c for copying and Ctrl-v for pasting.

Except that would break a ton of existing commands, since ctrl-c is use as a prefix for a bunch of stuff already.

You'd be making it hard for someone who already knows Emacs to use it. It shouldn't be a problem on personal machines, since you can override the defaults. But if you ssh into a server and need to use emacs, it would be problematic.

Also, on macOS, cmd+c and cmd+v work be default.