Earnings. It wasn’t just based on a game, it was based on incredible detailed research and experience. What happened in the last month is that everyone else realized DFV was right (with a call he placed in 2019), which made it clear the shorts were wrong and could be squeezed.
I think the roots of this are much more tied to the fundamentals of GameStop than we are currently talking about.
The mob simply magnified the gains/losses