As far as the oil pan, the design of the pan probably makes it too complex to manufacture at scale in a material that is more durable. It is not a simple cake-pan style reservoir. It has mating surfaces and ports that would be difficult to reproduce in metal. Here is the TSB that Ford techs need to follow to accomplish this temporary repair.[0]
[0]https://static.nhtsa.gov/odi/tsbs/2019/MC-10164470-0001.pdf
Here you're absolutely equating their failure at making a reliable oil pan as a reason to question them producing a digital display. Ford isn't producing the display. Their failure to make a reliable oil pan is pretty disconnected to them buying screens from an automotive supplier.
Ford isn't producing any displays, so questioning their ability to source a display given their failure at making a good oil pan on one generation of one vehicle is pretty moot.
As a counter point to displays being unreliable that, I've had Ford vehicles with displays that have lasted well over a decade so far, and to my knowledge still work. I've never had an automotive part have the display just fail on its own, personally.
As for them deciding to stop supplying them, eventually they'll also stop supplying the "analog" gauges as well, so its once again a moot point. That "analog" display can still fail requiring replacement. You're not avoiding that problem having needles instead of an LCD.