That's actually kind of a disadvantage, on a number of levels. My super-superficial view of Robinhood is that it encourages active investing, which is not recommended for most people.
1) As mentioned before, you're probably best off investing in something simple, like an S&P 500 or total market ETF. Therefore, better to avoid a platform that encourages buying individual stocks.
2) By the same token, better to avoid a platform that encourages lots of buying and selling - you want to build a strategy and stick to it, not make decisions based on emotions. And that can be tough no matter what, if you have significant money that you see lose 10-20% of value within a matter of weeks or months.
3) You also want to (in my opinion) look at what your money will be earning if it's not invested in anything and just sitting there.