Not too sure about other posts, as I visit the RPS homepage myself daily, but I can definitely say that I adjust the titles on my articles (most recent example here) for social media. However, in my context I think it’s very justified; fitting that length of a title on to a social media post is often unreasonable.
So they generally get manually truncated before being published, commonly to provide a better summary of what it’s about (usually ‘What you’ve been up to this month in the community’ or some such).
Sarfrin, a recent example of an article being split over multiple pages would be this one here. Again, totally justified in my opinion due to the length of the text and I think it’s much, much easier to read lists like that (especially if you’re on mobile). I think some people dislike it due to the extra clicks, and therefore it may be perceived as fishing for more views. But if that was really the case, then why not just slideshow all of the entries on the list, or prevent readers from just skipping to the top five or first place?