They’re not done yet. Just announcing (and the verge reporting on it).
Their announcement (here) is quite forceful though, interestingly. The article described it as a manifesto.
See also a recent post here about their survey on integrating activity pub: https://lemmy.ml/post/14734757
Subscribe to the user, not the publication. If they want to actually read the article, they’ll have to log in and give them money.
This is pure speculation but it makes the most sense to me.
Yea, that’s the most straightforward for sure … but requires leaving the fediverse. I suspect that there are plans/dreams of being fediverse “native” and enabling the full content/publication to be read from ones fediverse account.