I have linux (pop os) running directly on a macbook (basic dev work), and the different key combo for copy paste in terminal is one of my very few issues.

debating with myself whether to remap keys (and then fumble on other linux terminals), or to just learn the new key habit.

Checkout my project before going around and remapping all of your keys.. Kinto doesn't do anything like that. It will actually do all of the remappings you want via a single config file that you can easily add on to if you really need (I doubt it though) & you can disable it or uninstall it at any time. https://github.com/rbreaves/kinto or http://kinto.sh