Copilot can be disabled, which is what I did, because I have a subscription to ChatGPT-4, but it cannot be removed, because artificial intelligence is now part of the operating system and, increasingly, part of everyday life. So disable it if you wish, however, I think the better choice is to learn how to live with it, because artificial intelligence, for better or worse, is the future, and no one can escape the future.
No one can escape the future, but we should free to choose among all options which one suits us better. Every time Microsoft tries to push something to me, I immediately reject it. Edge, Copilot, you name it. They don't ask you if you want to enable that feature, they just install it with an update, activate it and don't give you any easy way to deactivate it.