I see this as revisionist history. Mozilla has long been beloved for a whole host of FOSS reasons, that align with the same reasons FOSS enthusiasts like anything FOSS. I do think there are fanbases for things who think their object of adoration can do no wrong (e.g. Sneako fans probably). They are out there, but I don't see that as being true of Mozilla.

I've seen supporters of Mozilla make nuanced points about it being an imperfect but important diversification of options that prevents Google from dominating the browser space, often in thoughtful interactions with fans of (say) the Brave browser or Opera browser over the fact that they rely on Chromium which is sustained by Google.

Those convos have more going on than uncritical adoration, and imo it's important to let those nuances breath so that they, rather the oversimplifications, can be our primary takeaways.

Interestingly, while talking in mournful past tense about Firefox's having lost their way, in this same thread there are people a few comments above denying that criticism of Mozilla is prevalent here. You guys should scroll up (or down) and say hello to each other.