Nice, uscampgrounds.info is new to me, and looks like a pretty great resource! Added it to the "valuable external resources" post.
But yeah, largely agree with their points. I'm solo full-time in a high-roof, short wheelbase Promaster, and it honestly sometimes feels like more room than I need. Different story when my GF joins me though lol. Also, for me, part of the point of RVs/vans is to go at your own pace. Much easier to enjoy myself traveling when I'm not pressured by spending $150/day on a hotel room.