PECOTA always has a real hard time with oddities. They don't predict breakout seasons well, and they damned sure don't know what to do with guys like Kopech and Crochet.
When we have multiple threads on the same topic there is no need for another. Otherwise entire topics get buried so we can have 4 different versions of being better in 2021, because 3 other people want higher hit counts.
Young Robinhood trader committed suicide thinking he owed almost 3/4 of a million in margin call.
https://www.nbcchicago.com/news/local/family-sues-robinhood-after-naperville-college-student-died-by-suicide-thinking-he-owned-730k/2432893/?_osource=SocialFlowFB_CHBrand
You can still request physical delivery of stocks, some companies do deliver a decretive certificate upon request. Actual clearing in 2021 is all digital.