Although he is financially one of the richest businessmen in the world, it is also worth noting that the share prices of his other companies could fall through losses on his Twitter purchase. In my opinion his main mistake was disregarding public sentiment. What is your concern?
I don't see that as the main problem, Elon Musk is a businessman and he knows what to do when public confidence starts to peak in trust in social media platforms and the stock.
You will be surprised in the next year he will take over another business, Twitter as social media has a great reputation in the world and I'm sure he is doing something to surprise a lot of people. Business people do many ways to make a profit and what Elon Musk is doing is his way of making a profit.