I max out my Roth IRA contributions every year, and that's basically the extent of my investing knowledge. Can someone explain in simple terms how the new Nasdaq rules affect someone like me?

Keep seeing doomer posts about the new Nasdaq rules, but I don't fully understand how these new rules actually change things. Saw many comments talking about how Elon is dumping his bags on retail investors, but I don't fully understand what is happening.

Can someone explain why this is a big deal in ELI5 terms?