I don't know how much credence to give the voices claiming that today @mozilla is essentially controlled opposition, but there's little doubt that they are putting suspiciously low effort in making sure that their browser is appealingly competitive, preferring to pour resources in side endeavors that I doubt help them in any way in improving the cash flow, other than distracting them from improving the product Google doesn't want to see being improved.
I should clarify that I'm not claiming that their “other” products are useless, or that we would be better without, but rather that the #openWeb, and in fact #FLOSS in general, would benefit more if they invested more in their main product(s) rather than claiming “lack of resources” for their choices to not give standards the support they deserve.
And yes, this is (also) about my pet peeves (#RSS, #MNG, #JPEGXL, dropped and newer protocol support), but it goes beyond that: