I think a lot of the problem here is that all of the forward looking design is looking at the 787 dreamliner where the air conditioning is done electrically rather than with bleed air. It seems entirely plausible to me that this situation arose due to a descoping halfway through the project, where an initial version of the design wasn't going to use bleed air, they then decided that doing that much design work would be expensive, and put the bleed air system back in "because it's exactly the same as what we've been doing for the past 100 years" and no one realized that in the meantime, someone else on the engine team had designed a system that would dump a couple gallons of oil into the bleed air system if there was an engine failure.

I’m with you on all of this. It’s like all of the grownups left the building and the inmates are running the asylum.

Frikken clown world hijinks.