Welcome to the forum! Do a search on warranties, that topic has been much discussed. A few have had good benefit from them. Most of us won't purchase ext warranty again. Deductibles, repair folks that won't take them, exclusions, all limit your coverage.
These plans make big money for the RV dealers, that's why some push them so hard. I've heard commissions run in the range of 50%, they couldn't do that and make a profit if those contracts paid very often.
While you are doing your research, check out the dealer company you are planning to buy from. Plenty of discussion about Cramping Wurld here, too.
May the trails always twist in your favor
May the tales always end in good light
May you have more friends than one campfire can hold