IIRC you can’t even read a single post without an account, it is equivalent to posting a link to a private Facebook group or whatever from an outsider point of view.
This is incorrect.
You can see the last few posts of an account [1], and the contents of a single posts, but minimal or no comments [2]. Videos play after dismissing the login popup.
You can read posts you link to directly, but no comments. That's what makes it less useful.
What's difficult is reading threads, or more broadly replies. But single posts? Absolutely fine, in fact it's about the only thing that is totally functional without being logged in.