We don't know what he means exactly by showing "diamond" on his tweets. It can be Bitcoin or another thing. Personally, I don't care!
What I care is about the impacts made by his tweets on the crypto market. Also, many people already followed him and trust him because of the hype. We must be aware that he isn't a crypto hero, he is playing us to take advantage. Let's hope this person disappears very soon from the crypto world. What he did is really annoying.