If there was no conspiracy you think it was a coincidence that he was banned across all major platforms at the same time after using them for years?

I guess I can kind of see how it is possible to believe that it was a coincidence that all companies banned him simultaneously. It's obviously overwhelmingly unlikely that it was a coincidence, but that is at least a coherent thing to believe. On the other hand, I cannot say the same for the claim that there was "no censorship".

What do you call banning people because you don't like what they have to say and want to stop them from sharing their viewpoint if not censorship?

If you want to argue that Jones should be censored, that seems like a rational and worthwhile conversation. I don't get how you can argue that he wasn't censored though.

Regarding how Facebook, Apple, Twitter, YouTube, and Spotify are different than a random phpBB forum, I think I'll just leave that one as an exercise for the reader...

Enforcing rules of platform is not censorship. I don't care much if it was a coincidence - I did not say that, anyways. Even if a group of people had a videocall about it, it's not a conspiracy, merely a group of people had a call about a long standing issue and did something about it, which was absolutely well within their rights - even if completely random, which it wasn't. We used to have chats with other Minecraft server admins about some specific people ("griefers"), too - not even the griefer thought they had any right of access or that we "conspired", though.

"Conspiracy - an evil, unlawful, treacherous, or surreptitious plan formulated in secret by two or more persons; plot." - https://www.dictionary.com/browse/conspiracy