I agree with everything you say except for the need to have roadside warranty or "Who is gonna fix it". Warranties are a suckers game most of the time at least where I live. They always find some excuse not to honor it.
When I drive over a nail who is gonna fix it? Me, thats who. With a tire patch kit (plugs) that I already have in the trunk. And its very easy, plenty of good YouTube tutorials. I fixed 2 flats already in only 21k miles. Cant really prevent flats, it just happens. So we have to be prepared and keep an air inflator in the car along with the patch kit.
I always say the best rescue is self-rescue. But I am very impressed at how much life you got out of those tires. Also recommend
https://www.amazon.com/303-30313-CSR.../dp/B00KN0UOEE
This Aerospace 303 tire protector will prevent us ever having to change a tire simply due to dry-rot and damage from the sun. Apply that stuff twice per year and its like applying moisturizer to your face to keep the wrinkles away.
Apply also to the rubber around the window and door seals and also to the CV boots under the car. This stuff is like a serum that protects rubber and keeps it moist and soft and healthy.