Apparently Robinhood doesn't display warnings about risk/volatility before customers purchase leveraged/inverse ETFs, which is standard among competitors.
Also, Robinhood displays different information when buying or selling options, in a way that highlights the possibility of making money and downplays (or completely ignores) the possibility losing money.
Competitors show the same information whether you're buying or selling. Robinhood shows a measure called "to break even" if you're looking at buying a call option. If you're looking to sell the same call option, they instead show you "chance of profit". In both cases, they show no information about how likely you are to lose money, or how much.
Perhaps relatedly, Robinhood makes tons of money off option fees; in September, they made more than 2x as much from option fees than vanilla stock trades.