On one hand, this will maximize crop per area. On the other hand, it will kill off all insects that require diverse sets of plants, causing issues in the food chain above. The long-term consequences are unknown, likely not good.
It's not the chemicals that kill bugs afaik, just the fact that what was once a very diverse eco system became XX sqkm of the same plant growing on basically dead soil
This robot would not change that problem
What we'd need is sustainable farming with crop rotation and lots of diversity, but this is less efficient and farmers are already not making a ton of profit
It's already a problem, I agree. Another big problem is the increasing measurable presence of those chemicals in pastry/bread/flour these days, with unknown long-term effects.