The LED / LCD displays are probably lighter (less heavy), and someone figured they can save 0.001 gallons of diesel a year fleet wide if they replace displays.

Net Zero Fatigue is real.

Much more likely, I think, the mechanical displays had some maintenance cost which cheap LED displays will not.

You've confabulated a reason why they replaced them, linked it to initiative then complained about them doing it all in two sentences. A gold medal in mental gymnastics is warranted here!

They’re probably just cheaper and require less maintenance.

You’re not doing your cause any favors by projecting everything on an ill-fitting frame.