Maybe because the woman race is passing there when they’re behind?I don't think so. Most riders want to finish the monuments if they can. I also seem to recall that I saw an angry rider or two post on Twitter about this a few days ago (I can't remember who it was).
By the way, Astana had no riders finishing... Good job.
I saw my local man Taminiaux uploading on Strava with the race still 40km to go or something.