

Those are called pivots, and what you are saying seems plausible: there are vision algorithms to recognize and selectively spray weeds (see Bilberry ), recent prototypes with light-pressure grabbers to gather fruits and soft vegetables.
Even for harvesters, there are projects to automate harvesting and swapping the grain trucks (see Outrun ). GPS-guided (or assisted) tractors are already a thing.
Agriculture has some interesting innovations, but it often gets bogged down in corporate acquisitions and monetization.
“Android is Linux” is a bit oversimplified.
What the is issue, still simply, the way I understand it:
So yes, Android uses a Linux kernel, but in most cases, a very specific one.
Why not replace it? This requires: