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.
It won’t hurt to doubt something that’s too good to be true in the eyes, especially when it’s for looking out for one’s safety. But, I also see your points, that Drake has nothing to worry about sharing this. It’s just that sometimes even those known personalities who are unthinkable to do something vexatious, we cannot be sure right?