Every platform nowadays suffers from this. Reddit's admins recently posted saying they intended to continue allowing anti-vaxx content. To quote the admins themselves [1]: "we believe it is best to enable communities to engage in debate and dissent." YouTube is the other cornerstone of the anti-vaxx movement, hosting and (quite sinisterly) automatically recommending countless videos on the topic (see Plandemic).
Well, yes. That's because it drives engagement, sells ads, and makes money. As long as they social media companies can keep the "both sides" field open they can occupy that space for profit as long as they want, without regard to morality or ethics.
1. https://www.reddit.com/r/announcements/comments/pbmy5y/debat...