Kinda confused about this, though. There is a freedom of speech, right? It should be legal to speculate. How could you get legal actioned for it? Do you have the actual laws that that speculation would potentially violate? Defamation or invasion of privacy don't seem to fit, for example.
If it's the forum rules, fine. But I'm not sure why you'd bring legal action here when that doesn't seem to apply.
Freedom of speech doesn't mean freedom from consequences. You can absolutely get sued for making false statements with the intent of maligning someone's character to damage their career - that is defamation (specifically, libel). Brian Burke successfully sued several HF commenters for defamation around 10 years ago.