This is not about blockchain, silly. You simply don’t know how people use it. It can be very, very valuable tool, especially among people who have to use privacy-oriented services like Proton. The fact that you confidently ignore such use cases tells more than enough about the depth of your knowledge: it is based on hateful social media comments and nothing else.
They are moderately active on Mastodon, I saw them answering questions. So if you want to ask something, that could be a better option that is also not limited to a single AMA session.