That is possible, but I have absolutely zero evidence for that at this point. I would either think someone successfully managed to social engineer Twitter into making an unauthorized change or that there is some other avenue besides the regular interface that allowed access to my account (so not protected by my password or session).

I see now that you are very prolific on HN, even being #2 on the Leaders list: https://news.ycombinator.com/leaders

So I guess your suspicions that there's more than meets the eye have more merit than if it would be a random poster. However, my initial reaction was still "what makes this different than any other hack?".

Nothing, that much is clear. But - and this worries me at a different level - if getting blocked from Twitter is this easy maybe I should not be putting time into it at all.

But it's very convenient to keep contact with a large number of people with very diverse interests.

I don't drink, don't use drugs and my memory over the span of a few minutes tends to work fine.