In terms of brain implants, we are at the Peg-Leg level of sophistication. We can offer them a solution that will help with some problems, but it isn't a case where we can solve all the problems.
So something that detects that a seizure will happen then does a pulse to stop it. Will help stop the seizure, but not cure all the problems, as well it may bring in some side effects, because the brain so so complicated.
However for some reason we have been polarized to a point that we really can't judge tradeoffs any more. We want a 100% cure. We want our food to be 100% healthy and fill us up, and meet the taste we are craving, we want technology to Run Fast, Use little power, and be tiny. We want our contractors to be Cheap, Fast and Good.
The fact that we live in this imperfect world, seems to have a lot of people paralyzed to the idea of progress where progress will sometimes means there will be a tradeoff.