I don't frequent /r/wsb, but the onus should not be on the SEC to clamp down on a community, it should be on the service the "significant young people" are using to execute satirical investment advice.

For example, if Robinhood wants to gamify everything, then advanced trading opportunities should be part of some built-in experience-based level up system. E.g. you can't trade options until you have made X classic trades, or after you've completed X days of simulated advanced trading.