@michael13 - I checked into this as well while getting the ads display-bug fixed. Allowing comments is ultimately the author’s decision, but I have noticed that sometimes the post doesn’t have the ‘allow comments’ toggled on which can easily be flipped if/when the author notices.
I’ve looked through the daily bullets for the past few days to ensure the ‘Allow Comments’ are toggled on. If you notice a page, DM me the url and I’ll confirm it isn’t a nefarious bug floating around - especially after the massive amounts of backend updates we’ve been forced to do recently.