I don't think you understand what farmers are complaining about
Then they're not good at stating the case.
All that electronic shit is not the problem anyway. The problem is that they're not allowed to make repairs to it or install upgraded parts even if they know how. Getting rid of the electronics is one way to solve the problem, but it's the dumbest one.
Engine ECU problems are incredibly rare, more rare than problems you'd have with an old-school injector pump.
That depends on whether it's a MW or P pump or not. Those particular pumps are as reliable as the day is long.
Besides that, it's not legal to sell brand new diesel engines that don't meet Tier 4 emissions for on road or farm use.
Wasn't it you that pointed out these aren't new engines?