Thank you for your answer.
Indeed, I found a thread (only one) on the HF Discord in the community feedback channel (“Killing Paperswithcode”):
I understand that, like me, no one here seems to have any information on what will happen to the datasets previously hosted on PapersWithCode, and that discussions have instead turned toward backing up this data. But I’m still puzzled that neither the PapersWithCode team nor Hugging Face has issued any announcement explaining these changes or their impact so far…
Of course, it’s possible that I missed an existing announcement or discussion elsewhere.