I respect your point of view but someone could argue JMIA was a bad stock. Opened at 40, dropped to 4, then went sideways for a while, then jumped to 20, then back down to 9, then went sideways between 14 and 20, now it's finally back at 40. In hindsight, it's easy to say that JMIA was a blue chip potential stock. If not for this week JMIA is still a lackluster stock. Also let's be honest, it doesn't take any skill to put money in stocks like TSLA, AMZN, APPL, MSFT, ect. it's a no brainer those stocks are going to appreciate. But besides TSLA (which was helped greatly by the pandemic) you wouldn't eat off of those stocks for 20 years. Most people aren't trying to wait that long.
Now if we end up eating off of stocks like BRZU, GUSH, and the like, then THOSE require skill and foresight.