I think the feature makes lots of sense for Robinhood from a business perspective, but I cannot see the majority of Robinhood users fully understanding the risks of buying cryptocurrencies as an investment. It feels similar penny stocks and late-90s tech IPOs in that the price is driven primarily by uncertainty/unknowability in outcome and hype from recent returns.
Also I'm curious if Robinhood Gold (Robinhood's version of margin accounts) will work here, letting people easily borrow money to buy cryptocurrencies. This seems particularly dangerous for a product targeting small/layman investor.