I've been on HN since the very beginning and the solution has always been simple: if the post is auth/pay-walled then post archive links or copy paste the text in comments.

I get why there's noise about banning X suddenly but lets not pretend it's for sudden technical/UX concerns. No one is calling for NYT, WSJ, or WaPo submissions to be avoided. Twitter had auth gating for many years before Elon.