Although I'm no fan of Musk he's a pretty smart guy and he's done a pretty good job so far of toeing the line. (Though I don't envy his lawyers because I suspect he toes the line a
touch more than they'd prefer.) And, as the saying goes, winning fixes everything, so I think the fact that Tesla is "profitable" and has a promising technology at the core of the business helps, too. It's clear the stock price isn't
entirely derived from the company's value but the company clearly isn't worthless, either.
All that is to say, I don't think there needs to be any additional restrictions or regulations on investors to deal with meme stocks because I think the problem will eventually be addressed via the existing system. Whether it's Musk or (more likely) some other enterprising social media personality I think we'll eventually see a meme stock that's so egregiously ridiculous and loses a lot of people a lot of money that the SEC, and perhaps the DOJ, will be forced take action. Maybe even multiple egregious meme stocks will be used in quick succession in order signal where the SEC's "hard line" will be.
And I eagerly await Matt Levin's "Memes are Securities Fraud" column when it happens!