Criticizing Mozilla in every situation is almost guaranteed. An odd behavior for a community that supports FOSS.
Mozilla's credibility is a threat to the powers-that-be in the industry. I wonder if that drives a lot of it:
Attacking the messenger is a very popular tactic now. You can see it on Fox, for example. Attacking the messenger changes the topic - it makes the messenger the topic, not the undesired thing - and the messenger often responds by embracing this new topic by defending itself. The undesired thing is forgotten and to the degree it's remembered, the attack is discredited.
Mozilla's credibility is a threat to the powers-that-be in the industry. I wonder if that drives a lot of it:
Attacking the messenger is a very popular tactic now. You can see it on Fox, for example. Attacking the messenger changes the topic - it makes the messenger the topic, not the undesired thing - and the messenger often responds by embracing this new topic by defending itself. The undesired thing is forgotten and to the degree it's remembered, the attack is discredited.