Knowledge, perhaps but there are alredy places knowledge can be acquired publically like libraries etc.
No{one/many} are entitled to people’s personal spaces or thoughts especially if they are harrased a lot or the admins of an instance don’t do a good job protecting people from harrasment etc.
Folks have the right at any time to block others from seeing whatever they put out for any reason, instances the same, otherwise bad or insufficient moderation and harrasment happens just like on commercial social media (we bring that up because commercial social media cares even less a lot of the time).
Folks can and do release their knowledge publically (sometimes for payment) as well, so bookshops and perhaps video sites, more personal blogs etc might be a good place to find that stuff instead of trying to get into people’s personal spaces if they don’t want you or any{one/many} to.
Kind of good in a way. It was always colonialism for tech companies to be using it anyway, when it wasn’t meant for them.