OK, [i’ve never had a tube stem failure]. The times I’ve had a puncture Was because the tubes Snake-bit, and or punctured by thorns;
On dirt bikes: on the outside of the rim I use a contoured aluminum washer that fits against the rim with a tightened nut , / been using talcum powder at every tire change for decades. The front rim uses one rim lock while the rear uses two rim locks. Even with the tightened nut. I’ve seen the valve stem at an angle. Never had a valve stem torn.
… Using the aftermarket contoured anodized aluminum washer it acts too seal/keep water from entering inside of the rim.
To each their own.