The whole thing is nuts:
1. All of reddit's content is UGC. They write literally nothing themselves. There's a strong argument that everything there written by unpaid users should be considered a public good.
2. Tech companies are now, ostensibly, aware of value of having users who engage intentionally instead of compulsively. Mobile apps, with their notifications etc., encourage compulsion. Websites less so.
It will be an interesting reckoning when the polity wakes up to the idea that as social media companies don't pay for the content, they should have no right to restrict access to it. LLMs likewise wouldn't work at all without the petabytes of data they either got for free from users or purloined, and so the argument for their weights being public goods is similar.