I noticed the same thing. Since these insurance companies also read social media and RV'ing forums, they are well aware of things they should not cover and roof repairs on Winnies and leaks in nearly all of them are excluded for most economical policies.
I've been with Progressive since I bought my '02 Journey and discovered the caulking issue on the roof and the front window leak issue shortly after purchase. Since they wouldn't cover the roof, spent many many hours researching and came up with my own DIY method of trying to extend the roof's life, along with methods of mitigating any leak problems.
Read about it here, note there are some RV'ers that are just adamant about NOT using tape like I have successfully on both my Class A's. I dunno why, you could actually use both caulking
and tape if you want. My Journey is a '02. Articles are ad free:
Roof and Roof Items.
Note that Winnebagos have a history of rusted out front window frames due to leaks around the windows and from the upper front running lights so watch for that too:
Weather Proofing & Windows...