While it’s an improvement here, I have serious reservations with it philosophically being “native” in XF, and it actually undermines the strategy for building out more than just a forum on XF.
If you're going to disable comments, I'd attempt a template edit that is really a "reply" macro (I'd need to check if the reply is a macro) and have it reply to the associated thread id, redirecting them to the last post (theirs).
Pretty sure this is achievable, but I don't have an up to date AMS.
If anyone is interested in something like that when I open my next forum in the following weeks, that relies on AMS as a main driver of traffic, I'll post the template edits.
Alternatively, you could possibly make an Article thread type and the discussion tab's first post would be the full article (so it stays at top). That way they can still read it. But I don't know the implications of that as far as duplicate content goes.
There are already some topics in this board like that, but the whole thing feels underwhelming to me - not a criticism of how Administrata has or has not done things, but the offering from XF and the lead it sets taken by others.
I am wondering now if I want to provide articles if I need to make my own, but I’ve been wondering that for a while since I don’t especially want to write articles in the XF editor. I’d almost prefer Gutenberg for some of the things it offers but that’s a different proposition entirely.