I'll talk about one aspect of warranties that have a major impact on full timers.
Mainly that if you expect warranty work, you are going to have to leave the RV / TT with a dealer for a few days to a few weeks. While you have to find alternate living arrangements. Warranties will not pay for you to live in a hotel while repairs are being done.
Very few repair locations will allow people to live on their property while work is being done in a problem. In some cases it is a zoning restriction, others insurance problem, etc.
We have found I t best to get a recommended local mobile RV repair person to diagnose any problem that we cannot. We did have Suburban drop ship a new water heater to a dealer near where we were volunteering. It was cheaper to pay them $100 for a mobile callout to replace the water heater rather than tow the rig 84 miles each way and leave the trailer for two days.
It took 31 days for diagnosis of why the wheel hub failed, to find the other bad welds, for Dexter to work with the extended warranty company to cover the repairs and get two new axles shipped to Dallas.
We were lucky to have the failure occur only five miles from where we bought the trailer and they have a "head of the line" policy for rigs they sold. And that my daughter lived about 20 miles away.
When our water pump failed in Fort Lauderdale, the manufacturer would not consider anything except me taking the rig to one dealer in Fort Lauderdale, or taking it to Tampa. The Fort Lauderdale dealer told me we would not go in the work list until the rig was in their yard. It is was an estimated 3-4 weeks before they would be able to accept the rig. And 5-6 weeks likely before they would get to working on the rig.
RVs / TTs are more like homes than vehicles when it comes to warranty work. If the water heater, furnace, fridge, AC breaks - you have to deal with the company that made that component. The company who built the MH / TT doesn't warranty components.