That suit is filed against a government agency. Free speech protections in the US constitution are focused on preventing the government from stifling speech. These protections do not apply to private citizens or corporations.

Ah - good clarification. Did not know the specific status (if it was actually the agency or a company that provided ads). Thanks.

It depends on where the line in the sand is, or if that kind of discrimination is legal or not.

If AT&T wanted to terminate service to the Stormer organization they could do it without consequence, it's not their responsibility to provide coverage to anyone plus dog like they were under regulation. It's a free market. Stormer can find someone else.