Neonicotinoids kill all insects. They are extremely good at this. Noone contests this. CCD ("Colony Collapse Disorder") started as neonicotinoids usage raised, and so did the "windshield phenomemom" that all rural residents above 50 can tell you about.
If there were no parasite, no pathogen, and no predator, then bees would not be as much affected by pesticides for sure. But parasites and pathogens existed before, while habitat loss and monoculture farming don't explain what happens in relatively preserved areas.
All pesticides have an impact on insect populations obviously. I agree one should not focus on only one class of them, and work on an actual reduction of their usage and compensate farmers for profitability loss due to changes in pest management strategies.
You don't need to comment this. I know It won't be done and we're all screwed.