A) Twitter has never presented itself as a neutral platform. They've banned white supremacists, dangerous conspiracy nuts like Alex Jones, and even left-leaning people like Destiny when he joked about how he was going to bomb Comcast.

B) Verizon (Comcast, Spectrum, etc...) are closer to something like a utility. I wouldn't be supportive of a water or electricity company not providing services to people I disagree with. Twitter is not a utility, it's a glorified fortune-cookie-sharing site. It's a not a "right", and there's no reason that you should feel entitled to it.