Except for the fact that shift + insert is for pasting. ctrl + insert is for copy. Did not change till the old DOS days. Still works today, and even more, it works in my Konsole terminal emulator. There's nothing painful about that. Once you get it, it's like riding a bicycle.

Even more, selecting text for copy, then clicking a mouse button for paste is a pretty much standard workflow. putty uses the right click for paste, while Konsole / Gnome Terminal / etc. use the middle click for that. Don't know about other Windows terminal emulators though. The other emulators that I tried pretty much had the same underwhelming behavior as cmd.exe.