Forgive the slightly extreme comparison, but having comments or not is the differentiator between thinking oneself to be infallible and knowing that you aren’t. It’s dictator vs. scientist, closed vs. open, Trump vs. Denmark. Openness is more than being open to content, it should also include being open to discussion.
Now, “comments” by or in themselves aren’t really needed. What seems to be needed is a pingback/webmention system, one that is “open” enough to not be stuck inside the own architecture. IndieWeb/POSSE like webmentions, integration of Twitter/Mastodon content, with linkback and the goose’s fed.