Firefox's user base is apparently been dwindling for a long time now, so the possibility of this browser shutting down due to not having enough funds is getting higher and higher each year. At least, that's how I interpret it.
Can't donate to them considering how much money is wasted on their shit ceo.
Even then, I'm sure there's a litany of other things that they think they need but they don't. I notice the bigger corporations become, the more justified they feel in wasting resources.