It's pretty clear you don't realize (or understand) what really happened. He was doing things he shouldn't be doing, but the outcome of what he did was not nearly as large as what RH was showing him, which is what Ponyo was pointing out.
Even the first linked article puts it in similar words:
https://www.cnbc.com/2021/02/08/rob...s-20-year-old-trader-who-killed-himself-.html
The title of the article says "Robinhood sued by family of 20-year-old trader who killed himself after
believing he racked up huge losses". Read the bullet points... "Kearns committed suicide in June after
thinking he had a negative $730,165 cash balance on Robinhood."
All done with the hand holding if you can't figure it out from here.