Look, everyone cool out. If Az wants to run his motor at 12psi all day long, then good for him.
Az - people here were just cautioning you based on their experience, take it as you wish. You understand what your risks are. Ken has no ulterior motives and is not posting this to sell you some rods. He geninuely means well, as he's been through a stock motor himself. Are these new motors as weak as he says? Maybe, maybe not. Maybe you could prove him right or wrong either way.
Beyond that, we're beating a dead horse here. Az isn't going to stop running 12psi on the stock motor, and Ken isn't going to stop thinking that's risky. But at the end of the day, it's Az's car, and he can do with it what he wishes.
I'll let the thread continue, but the back and forth nonsense will stop right here. We'll pick that part up in a year or so, and see how many guys run 12psi daily on a stock motor. Hopefully it's doable. If not, then you know what to do.