While mega has dropped out, I'd just like to clarify on this point and another. You are allowed to scream fire in a theatre, and I really wish people would stop saying you're not, because the circumstances of where that phrase comes from, the SC case
Schenck vs United States, was a blatantly wrong and later overturned decision based more in the Wilson administration's immoral persecution of pacifists and anti-war activists then any legal principles.
Likewise to the third point. The SC has shot down laws attempting to criminalize false claims of military service, you have every right to make up stories about your brave military service.
The only legitimate pointers is the illegality of impersonating a police officer (or a medical professional or similar profession), a legal restriction that exists because unlike the prior cases, impersonating a police officer places you in a position to cause great harm to people.
Facebook, Twitter, etc have no moral right to deny service to disagreeable people for two reasons:
1. Big tech firms are so vast and influential that denial of their services to people is a significant deprivation of resources to those people, resources they cannot obtain elsewhere, and those resources are otf substantial, meaningful importance.
2. Big tech firms cannot deny service to pro they disagree with, because big tech firms have no opinions or will of thier own with which thry could form such a disagreement. Corporations are legal entities that represent the will and opinions of many, many shareholders and owners, who hold a massive range of opinions.
Neither applies to this case.
Phillips is a singular person with his own genuine beliefs that he has duty to act on as a human being with moral agency.
Phillips is not the only source of cakes in his city, cakes that possess only symbolic value and will not result in any great material harm if one is deprived of them.