The concern, I think, is that their spare cash is dwindling and thus financial prudence might be beneficial - especially for those who rely on the core Mozilla propositions like Firefox.
[1] https://stateof.mozilla.org/pdf/Mozilla%20Fdn%202024%20-%20A...
They're an NGO, you can just... look this up, it's public.
The last I heard was that the Google rev-share agreement was on the skids and they stopped developing projects like Thunderbird and Fake Spotter because they were capital constrained.
If you know otherwise then you're better informed than I am I guess