Putting aside the negatives, I see zero upsides of reducing brain power. The people being more equal perhaps? Maybe the path to the fabled middle class is to bring down the upper class.
These days, a lot of brainpower is spent on scamming people (case in point: Vivek Ramaswamy). One can really make quite a good living off of scamming people these days. If you could reduce the brainpower of that demographic, I think this would be good for everyone else.
