The grandparent talked about treating it like fantasy sports, and if they advertised themselves like, say, Draft Kings does then it would be one thing. As it is, though, the more thoroughly you trust their representation of how their product should be used the worse off you will be. I usually take that particular trait as a big red flag that a the universe would be better off without the company in question.

And yes, this criticism does apply to most brokerage accounts. Most brokerage accounts don't have half of Silicon Valley fawning over them, though.