I removed my anecdote and flash wear explanation, because of cranky folks like yourself.

The corrosion inhibitors in petrol engine oil get fully depleted within about a year with most brands. One may certainly sell the machine before you see acidified lubricant related problems, but the motor will not reach its full operational lifespan ( https://en.wikipedia.org/wiki/Bathtub_curve .)

I do agree that anyone with a CVT style transmission likely won't have to worry, as that entire section will probably need replaced before you see significant hydrodynamic bearing damage.

ymmv, best of luck. =3