I guess mailchimp is also doing this, banning/suspends accounts if the content you're sending is related to cryptocurrency or bitcoin coz I used there service before for free for 2000 limited emails to be sent for the newsletter of my site (
https://bl4nkcode.info) but when I reached it over, I topup to continue their service then they suspend my account, saying that I break some of their terms about crypto which they never told me, didnt receive any notifications, emails about it when I used them in sending those limited email for free.
But twitter? I have several twitter accounts, also running small business but I can still use it.
Twitter accepts accounts talking about Bitcoin. They just don't accept any advertising campaigns through their platform on ads.twitter.com. There is a misconception about Twitter and Crypto. As a social network, they won't ban accounts talking about crypto, it would be ridiculous and people will shout out for censorship. Imagine posting a tweet "The different use cases of blockchain technology, the technology behind Bitcoin" then you get banned...It doesn't make sense