Yes, everyone is entitled to an opinion. But making false statements of fact is not an opinion - and is a tort for which you can be sued. Has been for a very long time.
The claims made by students and faculty against the bakery and its owners in Ohio was likewise also not protected “free speech.” It was a tort - false statements of fact.
Reality.
In that case we need to be going after everyone who claimed that Trump was a Russian agent. I would say $1 billion each should be sufficient.