What is your argument? That losing weight does not result in muscle volume loss? That GLP-1s are somehow special and only losing weight via them causes muscle loss?

IFBB bodybuilders getting weekly DEXA scans and running multiple steroids including cycles specifically designed to help prevent muscle loss during cuts still lose muscle mass when losing weight for shows, despite taking every drug under the sun, working out an obscene amount, eating huge amounts of protein.

Your body will break down muscle when losing weight. You can do a lot to prevent the vast majority of it, but there is going to be some no matter what you do.