I can't decide if people just hate Microsoft enough that a future where you must pay to include an iseven function in your code is a price worth paying to give them a bloody nose, or there are just a large contingent of users making millions off their GPL code who are put out.
More seriously yes, copilot damages copyright (or is perceived to) and that is a good outcome irrespective of the actor. I will never see eye to eye with people defending the existing legal framework.