Whenever I see this I just assume it's people that are against Firefox/Mozilla anyway and are looking for any possible excuse to shit on them. Yes, it was bad, and an ideal organization would not have done it. But it is orders of magnitude less severe than what Google does to us every day. Not even a comparison.
No but things like hiding the favicon when the audio playing notification is on the tab, changing UIs for no good reason, removing features for no good reason...these are the things that piss people off. Mostly designers making life shit for no good reasons, and then the CEO whining about low pay and constantly increasing her salary (after firing the rust team)
