Because United doesn't care. This should never be allowed to happen in the first place - it's absolutely impossible these FAs did not receive mandatory training on the PP product unless United now has no control, or even interest in which FA is serving which cabin. This is almost as bad as AA allowing their totally untrained new hires to 'learn on the job' and work the F cabin without having a clue what they are doing.

Inconsistency in product delivery based on the personal whim or laziness of the FA has been a hallmark of United service for years, this is nothing new. The catering issue is more troubling because this either indicates a catering order issue from another clueless department, or worse, if Y was not full, they just deliberately served Y meals to PP while either ignoring the boarded PP meals, or decided to eat the PP themselves.

If Matthew can share the product service sheet from the IFM for us to print out and show rogue FA's it would certainly be helpful - at least in telling a rogue FA that their poor service will be written up with corporate on arrival. If something onboard ends up being really bad to this extent or worse, I would even go so far as suggest that you "break your cover" as a third party QC consultant hired by United to review onboard service and tell the FA and purser the service was so far away from the expected standard, that the crew members involved would be written up in your report immediately on arrival. If that doesn't trigger some kind of immediate improvement in attitude, then we can conclude who is really in charge of the asylum.