I think that bet was just to attract other bettors to follow him and I'm sure a lot of them did just like that as sheep effect can be huge sometimes , especially if a superstar promotes it. Personally, I will never follow someone known regarding bets because they can afford to lose and also they're doing for entertaining and maybe for the bookies but wagering with BTC in that amount it's just wow and I'm sure he has a lot of cryptocurrencies if he made that bet.

Overall , it was a great promo for both BTC , Super Bowl and bookies as well and a bad one of gamblers haha.