Seems legit to me. I don't think stake needs to set this kind of thing up even, they don't need to, they have the money to pay for better advertisement opportunities and honestly, considering the amount he bet, it isn't that odd that he could win that much. High-risk high reward no?
We have to ask ourselves to what extent this story is actually true. If you were to win that much money, would you share that information on the internet? Do not think so. There are many influencers active. The story may be real, but when things seem too good to be true, they often are. It is indeed a huge amount that is mentioned. I know the Superbowl is famous with big bets.
Sure, if I was someone that isn't really active in social media or something. But Drake isn't, he's a really popular dude that could rake in more money than the amount he won right now, why would he be afraid of sharing it? Whether it be intentional or not, he could do it freely simply because his name is well known already, it's like a stamped name of sorts.