This is not surprising. When Tesla started out they had not much competition. Now that all the other carmakers have entered the market it is much harder to maintain their lead. Tesla losing market share was pretty much to be expected and Musk alienating their customers and the laughable Cybertruck certainly did not help.
It is not really FUD to point out that Mozilla wastes ungodly amounts of money on projects of dubious utility instead of investing it into their browser. Their current trajectory doesn’t inspire much confidence either. Mozilla started to waste even more money on ‘AI’ features nobody asked for.