After about page 2 of that thread it became a p**s-ing context. Not looking for an argument or smart *** comments, just opinions of whether they are good or bad.
And that's the real lesson of the thread - it's become a religious debate here.
Bottom line is that I've not seen issues with oil screwing up the MAF, but others say they do. And I actually don't have one in the Jeep, because just a filter element will do little to nothing for your performance. Even a full CAI is really just a dress on a pig IMO.
But I do use them on my Corvette, where airflow is king for me. Heck, I even took out the MAF screen to get better flow, but entirely different beast. Been doing that for the life of the car, which I've had since new in 1996. So I do think they are good filters, just maybe not for every application.
My $0.02 is on the Jeep, they aren't really worth the coin, but if you went ahead and did it anyway, you'll probably be fine.
Besides, according to some here, you'll apparently notice a lot more problems with the big honking boulders they let into your engine well before the sensor gets oiled up enough to matter.