It takes only 50 customers like the guy above to loose their money to some ill-conceived put option.

Considering the posters of /r/wallstreetbets have a leader board going to see who can glitch the most leverage, it's well within the realm of possibility

https://old.reddit.com/r/wallstreetbets/comments/drt5tr/guh_...

Unless I've missed something, it would only require 1 customer with a serious risk appetite.

I believe the phrase is a high "Personal Risk Tolerance"