I've got about a third of my position left.
Most brokerages just limit to showing 10 at-the-money calls. There is always a button/option to show more of the chain. Those options tend to be riskier and less liquid but I think it is a design choice instead of a 'protect their traders' choice
Anyways, almost the exact thing that the trader killed himself over happened to me about 7 years ago on a platform
built for options trading. I remember sheepishly calling into the customer service with no idea how I was going to pay for the XLE calls I was assigned.
I think that Robinhood is a subpar brokerage now that everyone offers free commissions, but I think the flak they got for the suicide is an industry-related problem. If I remember right though, settlement or one of the main steps takes place on a Saturday/Sunday so being in the hole Friday and then having the adjustments take place over the weekend is technically correct I think...?