@liaizon as you alluded to in your reply, WP gets around this by assuming type as:Note which I disagree with from a protocol fragmentation standpoint. It implicitly acknowledges Mastodon as the dominant #ActivityPub player with clout to change the behaviour of others, and I stand against it.
#nodebb will send type as:Page (like #lemmy and #kbin), and we will work with @article_interop (and hopefully @pfefferle) to encourage Mastodon to handle it properly by modelling the appropriate behaviour.