I don't think it's an isolated incident, I think we'll just see it play out in different forms.
In the future, companies like Robinhood, Trading212, Coinbase, etc. will continue to reduce the barrier to entry for investing in securities. As online communities (through social media or otherwise) continue to grow, everyday investors will be able to have a larger influence on a company's share price. It's therefore something that companies and investors will have to factor into their strategies.
Reputation also becomes exceptionally important. It is now exceptionally easy to share positive or negative news about a company online and for it to spread very quickly. I'm sure that will only continue.