I can go to several dealer websites here in Oregon and all of them have diddle for used RV's and their supply of new is less than 2019. What I'm seeing is that when you scroll down the page you see a lot of "On order" postings.
I also drive by a lot that is now selling a TT brand that they didn't in the past. Didn't need to because the brands they did sell they could get more fairly easy. Now they're stocking anything so they can make a sale.
Here's an interesting take on the state of the RV world as of now.
https://www.youtube.com/watch?v=HqV28ayI1o4