I'm going to start spreading this around. It's a comment by someone else who points to an interview of the WeBull CEO and why they had issues. It's pretty clear that this is a process issue, not necessarily a RobinHood is evil issue.
https://news.ycombinator.com/item?id=25950191
Edit: I didn't know before listening to this how much was going on behind the scenes for every stock trade. It reminds me of what it takes to buy a house.