It sounds like the author is talking about full-time RVing. So with that in mind here are the author's reasons (my comments in blue):
1. RVs are really expensive. The core appeal of the RV-retirement lifestyle is the perception that an RV costs less than a house.
Depends. I've seen full timers in really cheap (< $10k) and in really expensive (> $1M) RVs.
Costing less than a house? Yep, I've seen a lot of that sentiment over the years.
2. You'll spend even more money updating your RV's decor.
News to me.
3. Your RV will depreciate in value.
Since almost all vehicles depreciate in value, it seems hard to believe that Joe Average would not think RVs would also decrease in value.
4. RVs guzzle fuel and costs in 2022 are crushing.
. . . prices are not so good in 2024 too.
5. You'll need extra insurance for your RV.
Especially true for full timers.
6. Health care can be a hassle when traveling in an RV.
Big Time!
7. You'll have to deal with your own waste from your RV.
I suppose someone could believe that RVs "burn" waste, but to me this point is right up there with #3.
8. Quarters are close in your RV.
Definitely worth thinking about before departing with the wife, three kids, and two dogs.
9. RVs are a bear to drive.
Right. You're driving a truck. Some trucks are easier and more comfy to drive than other trucks, but you're driving a truck.
10. Overnight parking can be problematic with an RV.
True dat.