I did a filtered search of Lanesville for ski-in/ski-out listings, @Amy1855 , and 47 places show up. So I wonder whether your guest was confused, having looked at a number of these before he booked. He may have thought that's what he was getting and decided he should warn future folks like himself.
(I did the search because a bunch of amenities have been added recently, and I found that my own listing was showing things I hadn't toggled. I wondered whether that had happened to you. It hadn't.)
Whatever he was thinking, star loss happens to all of us. Guests make assumptions, or don't read, or preemptively lash out when they have broken something, or don't "believe in" perfect scores.
In the real world, your 4.93 rating is amazing.
In other amazing things, look at the view from those windows! Wow!