Reviews of OEM Volkswagen valve stem seal

I also am getting my cylinder head replaced under warranty for a 2020 GLI due to the smoke on startup. I had my PCV valve replaced around 14k miles, then did the valve stem seals and both worked for only a few thousand miles. Now the dealership wants to replace the head.

My first car was a 1.0L polo with 50hp and 99mph top speed. Any time I was in a hurry to get somewhere I would be doing sustained 6k rpm for hours at a time. I did frequent oil changes so I think helped the engine survive but it did wear out the valve stem seals so it smoked a bit on startup.

When I rebuilt my ABA block for my Cabriolet, I was pretty bummed when I discovered it was using oil. Not much, maybe 1/2 quart per month of driving it daily. Like I said, I was pretty bummed because I figured I had done something incorrectly. I even re did the valve stem seals, but that did not help.