Maybe they thought it was a scam?
It's easy to do that because there are a lot of scammers on twitter that are doing shady things with bitcoin and altcoins every change they get.
Perhaps twitter thought their account had been hacked?
Proton announced the bitcoin wallet integration and the ability to send bitcoin via email and then Twitter suspended their account.
However, 2 hours later the account was brought back.
(Source: https://x.com/BitcoinNewsCom/status/1820143414941556988/photo/1)
It was interesting.