I suppose that could mean at HN but I first read it as in, in general, search engines, links in people social feeds etc.
If it is the latter, than yes, use a deny list with either OEM or a third party tool will do the trick.
Further a list of paywall sites [1] and a suggestion to detect paywall sites [2]
[1] https://old.reddit.com/r/AutoModerator/comments/31gwn9/does_...
[2] https://stackoverflow.com/questions/75205081/identifying-web...
