I assume it's sensationalized, and that the truth is that "You cannot play Diablo 2 resurrected after 30 days of being offline (until you go online again to re-affirm your ownership of the game)".

I still very much do not like this, given that someday the server which affirms your ownership of the game will be taken offline.

Neither, but the game refuses to run until it can call home. (Edit: after which you can enjoy it for another 30 days without Internet access if you want to)

For some official confirmation of the policy:

https://us.battle.net/support/en/article/298306

Yeah, the post is so low on information it really doesn't seem like its worth taking seriously. Not even the screenshot supports the claim.

This is the kind of question that should be the top comment on HN. I'm surprised to see so much jumping on the bandwagon for an obviously exaggerated claim. note: I am not defending what blizzard is doing.