The way Robinhood displays this info is no different than most other brokers. I work at a fund and spent alotof time "smoothing" out our pnl to take care of issues like this where one side of a option basket gets exercised and the other side hasn't yet.
By that regard Robinhood is in good standing as they follow the industry practice.
The otherside of the coin is that option trading, especially for retail, often requires
1) the person requesting the ability to trade options explicitly.
2) a phone call that screens the user for a basic understanding.
3) the user has enough money in their account to be able to exercise any options that they buy, ie you buy 1 Call contract for Tesla that gives you the right to buy 100 shares at the strike, do you have enough money in your account to buy 100 shares of tesla? If not then you can't buy
4) don't allow users to sell options unless they have a large capital margin in their account, and often don't allow them to write contracts at all.
And robinhood has to have phone support for issues like this. This may be the thing that sinks them. Sometimes when dealing with money and contracts with time limits you need to talk to someone immediately on the phone. Robinhood is at fault here.
this poor adult chose suicide, a permanent solution to a temporary problem. if he had just waited a few days or talked to his parents.