This had a few good ideas, but is 95% won't someone think of the corporations nonsense.
Worse, the ADA (like most other civil rights statutes) allows plaintiffs to recover their attorneys’ fees if they prevail in litigation but denies the reciprocal right to prevailing defendants, a perverse incentive to the filing of meritless lawsuits.
Not necessarily -- it means lawyers are either going to charge up front or aren't going to be willing to file a case they don't think they can win. The author seems to ignore the word "prevailing" here.
As it happens, the ADA’s mandates are largely oblivious to cost—oblivious even to the notion of cost-effectiveness.
So? It's alarming to me that the author apparently thinks the answer to this question is self-evident.