Anyone been turned away from campground for older rig?

We're planning a trip to TX. in June and was checking out some campgrounds and one place asked me the year and model of trailer I had. I told them and there next comment was you will need to email a picture and copy of the registration prior to making reservations to make sure we would be approved. Our trailer is a 2013 Gray Wolf 26BH. I told them no Thank You I don't think i'm interested. I completely understand rules but that was a first for me. No problem I just crossed them off my list.