How do I UNINSTALL Copilot???

Hello. Use winget.exe.

As administrator:

C:\Windows\System32\cmd.exe

winget uninstall MicrosoftWindows.Client.CoPilot_cw5n1h2txyewy

[ If winget didn't find CoPilot Try ]

winget uninstall Windows CoPilot MSIX Pack

exit

exit

You don't want to hear that it isn't possible, so I won't tell you. Instead, I'll address another point that you made:

I, as a user, have a right to decide what is or is Not installed on my computer.

As the owner of your computer, you have the right to decide whether Windows is or is not installed on your computer. As the owner of Windows, Microsoft has the right to decide what does and does not go into Windows.

I guess I should seriously consider bringing out my other pc 5hat is running Linux. Didn't want to do that...

Like you said, you can disable it either via settings or via registry, but to uninstall it, as of now, it is not possible. That's not BS answer, but honest answer.

I understand you are frustrated; we did give Microsoft consent as part of the service agreement we agreed to when setting up Windows, Microsoft has the right to update and add new features.

Instead of solely expressing dissatisfaction, it might be more constructive to provide feedback (Windows + F) on such updates to suggest Microsoft include an uninstall option.

Registry disable option is included in case you are interested: https://www.elevenforum.com/t/completely-disable-and-remove-copilot-in-windows-11.23264/  (it is from third party website but it is reliable source).