[SpicyLemonZest]

It's hard to talk about, because when a discussion is successfully censored you usually don't hear about it and presume any discourse on it would have been unreasonable.

I would point towards immigration as a topic where meaningful discourse is missing from social media. On most social media sites, the discussion will be dominated by people who think immigration should rarely if ever be restricted; Twitter has been colonized by some people who take the opposite extreme, often for overtly racist reasons, although this is tempered a bit by Elon Musk's personal support of high skill visas.

The "normie" immigration restrictionist position, that immigrants are great but only so long as they enter the country lawfully, is something I very often see expressed in news interviews or supported by older relatives and rarely if ever see expressed on a social media platform. I don't know how I'd go about proving this is downstream of fact checking, but there's a lot of orgs who argue that it's factually false to characterize, for example, someone who crosses the border without authorization and then applies for asylum as an illegal immigrant.