This is good advice. I wrote a bunch of novels, got a degree - a Ph.D. in philosophy to make sure I'll never make any money and people who have money wouldn't want to give it to me -, and did some Internet advertising. Not very surprisingly, I'm fairly poor. However, I've still managed to save a little bit of money so maybe I should start trading now.
GME was just done for laughs. A hedgefund lost 53% of its investment in the process. That's the reward you got when you bought GME.
If you want to earn money then you should never trade, and always invest. That means putting in your money with the expectation that a specific company or a specific portion of the market is growing. Think of stocks like Apple and Amazon or ETFs that mirror the S&P 500 index.
Bitcoin has established itself and has staying power so don't be shy to put some (not all money) in there.
Also, never trust random internet people (including me) when it comes to investment advice.
I would venture that a cadre of "senior" WSB redditors were at least partially behind the pump and dump to get the mob going, and then sold when it hit $300+
