I stop thinking about these things, I have no control over this matter and that's why if it happens, then we'll see the actuality of how it will go. Michael Saylor even talked about Bitcoin reaching $13M in the next decade and more or I think it is 2043-2045 that he said that it can reach that price. So, if it's all talk, he should start dumping anytime soon as they're in profit already and wouldn't look at the long term.
Michael Saylor generally invests using the dollar cost averaging method, meaning that every one of his investments is profitable. However, if Michael Saylor were to sell his Bitcoin at any moment, there would be a major change in the market. Since Michael Saylor has predicted that Bitcoin will exceed $13 million in the future, he will not sell his Bitcoin and even though the Bitcoins initially invested in the portfolio have currently made huge profits, Michael Saylor is not selling but is investing more. So I am not worried about Michael Saylor's Bitcoin for now.