"fly is an IT operations engineer | blockchain enthusiast | GameFi player"

Knowledgeable, technically skilled, and passionate about sharing, with extensive practical experience, he's teacher-level. He's also very active on Twitter, answering everyone's questions in the comments, and replying to each one very seriously. He doesn't limit himself, has a very tolerant and open mind, and is so hardworking. No wonder he has so many followers.