"Established things are established" BUT "established things don't always stay there." Things can change, if many people will support said change. The power of many is really something.

Exactly. And it seems that "many people" do not, in fact, support this change, to the point Libreoffice felt necessary to defend it after the fact on their official website.

Maybe "many people" remember what's been going on at Mozilla over the past decade. After all, Mozilla went there before and set the example of downward slope: first donations then partnerships, first opt-in then opt-out then automatically installed addons, first "contribute to the browser" then to sideprojects/non-technical causes, etc.

A similar case could be made for Wikimedia.