Cautionary Rock Auto engine sensor tale

I read MANY posts on line about anything but OEM not working for my wife's PT before we had one replaced.

I told this to my shop owner friend, who swore his would be fine.

It lasted less than a week, and the second one less than two days.

Bought a Mopar one, and is still fine 10K miles later.

How can they still make/sell these if they don't last a week?????