alphaXiv is a service that layers discussion about papers on top of arXiv.
To give it a whirl, I punched in "2407.15908". It came up with one paper (the correct one, "The Genomic Code: The genome instantiates a generative model of the organism").
It sait, "No comments currently added. Click the bell on top of the paper to stay up to date for discussion on this paper."
I figure this is a new service, so there aren't many comments yet.
But then I thought, what paper probably has a lot of comments? I tried "1706.03762", which is the famous "Attention is all you need" paper that introduced the transformer architecture. (It actually gave me 5 choices -- not sure why the other 4 came up. But the correct paper did come up.) This time, 5 comments at the top level with 1-3 responses to those underneath them.