[TJTx]

IMHO, like a lot of controversial subjects, it is “all of the above”.
Yes, a majority of ST tires are made in Asia/China.
Yes, too many RV’ tires are either overloaded or under-inflated.
Yes, there are user errors and/or neglect.
And on and on.
Again, IMHO, I recommend:
Research at least until you see a pattern for the best tire for you.
Follow the manufacturer’s quidelines for bothe the tires and RV.
Maintain your RV including suspension and tires.
Drive sanely. I stay in the right-most lane as much as possible unless I am forced to pass or there is a left exit. I also stay at 65 or less when there is a 70/75 speed limit or less.
Use a TPMS system as tire failure most often begins on the inside with usually no outwardly visible signs of trouble.