Not sure if "dangerous" per se, but the OP's comment about having made millions leveraging on SPY and QQQ over the course of 100+ trades doesn't check out, given that a few days back, they created this throwaway account to complain about finding it hard to quit their job at Amazon because the pay is so good.

https://news.ycombinator.com/item?id=25878201

IOW, they're lying for Internet points.