That’s probably on the tech more than Jeep. Valve cover gaskets can be a PIA when installing. The slightest crimp, fold, improperly seated, improper torque on the valve cover screws, etc., will result in another leak. A solid mechanic/tech, will get it right the first time.
These days, I’m often in the shop with them when it’s something under warranty, advising on how to do it, because they simply DFK. It’s a shame and I hate to be “that customer”, but holy shite…
I was called in to my last dealership on the regular for consulting. Most of their crew was under 25. The service manager was 27, and was never a mechanic. SMFH…