> many scientists won't go to bat against this kind of land use change. A self-respecting scientist won't say that converting croplands to monocultures ready for insecticide use lead to biodiversity die-off because it's hard to actually track the fluctuations between species
Although you are correct that the details are complicated and different species respond in different ways, the overall picture is abundantly clear. Intensive agriculture with large monocultures, simplified landscapes, and heavy fertiliser/pesticide input is wreaking havoc on biodiversity around the world. The scientific literature has been very explicit about this for over twenty years [e.g. 1-5], and lots of scientists (including my colleagues and I) are actively engaging with farmers, NGOs, and policy-makers to find workable solutions to ameliorate the problem.
[1] https://doi.org/10.1111/j.1461-0248.2005.00782.x [2] https://doi.org/10.1126/science.1253425 [3] https://doi.org/10.1016/j.ecolecon.2019.03.002 [4] https://doi.org/10.1111/gcb.14606 [5] https://doi.org/10.1126/sciadv.abg6995