Then I can only conclude that we have a radically different notion of what it means to live in a free society. It’s no coincidence that the reason you give why anonymity is bad per se, is exactly the same that despotic and authocratic regimes use to legitimize regulations that squash unregulated reporting, introduce mandatory licenses for bloggers and more.
Many here are mistaking anonymity with unaccountability and their own judgments with judicial due process. When you claim MS is guilty of a crime and therefore it is right to deprive him of his rights without judicial review, well that is not the society I would want to live in. And that’s entirely regardless of the fact if you are actually right on his guilt.
Fossi can state his opinions and write whatever he wants, up to the limits on speech through the laws of defamation, securities manipulation, and contractual interference etc. And he can try to remain anonymous. He can post things about his opinion of what he think Tesla is hiding or not disclosing in their financial statements.
But others can also post their opinions and write things, subject to the same laws, including for instance, they can post things about their opinion of what Fossi/MS is hiding or not disclosing especially when that is relevant to the credibility of Fossi.
That is truly living in a free society with appropriate protections for freedom of expression and the benefits of the marketplace of ideas.