Correct or not, cantastoria's criticism is that giving money to
charlatans takes that money away from basic research.
I don't understand who the supposed charlatans are. The basic scientists lauded by cantastoria for doing existing research are almost certainly going to get the lion's share of this new money.
outline why "mapping the brain" is possible and a good use of
resources.
Because that's how grant peer-review works? Who will compose the review panels for this funding? Mostly the same people who already compose the review panels for existing NIH/NINDS/etc. funding mechanisms.
I can only guess that you find this paper convincing.
The nanoprobe and "complex emergent properties" stuff at the beginning are a bit hand-wavy, but the concrete 5 and 10-year goals are sufficiently ambitious while certainly not outlandish.