Mark is a known bitcoin/crypto investor. In fact, since Mark Cuban owns Dallas Mavericks, there was this news years ago about the team will start to accept payments in crypto for tickets related to Dallas, well this was in 2018. (https://cointelegraph.com/news/nbas-dallas-mavericks-will-accept-bitcoin-for-tickets-mark-cuban-promises) I don't know if that had came into reality since 5 years has passed but this has came from Mark himself.
I hope none of you is investing because you saw Mark Cuban or Kevin O'leary speak about bitcoin.
Both Mark Cuban and Kevin O'leary are facing huge lawsuits for crypto investments they endorsed before going very badly. Cuban might need the profits from his new BTC to help clean up the older mess!