I can almost imagine a tired crew doing a difficult night approach in the weather, and then microsleeping during the rollout.
Indeed, I DO recall a tired crew shooting a simple, easy, and quite familiar visual approach at O-dark-thirty (L188 freighter) when the PF nodded off entering the flare .. fortunately the other chap was sufficiently with it to push the throttles forward and save the day ...
My view is that anyone who doesn't believe the reality of microsleep .. just hasn't yet had (or realised he/she has had) the experience.