Targeted neurodiversity programs — an alternate interview, a skills exercise, a supported first months — are lawful, and for some candidates they are the only door that opens. The ADA does not forbid recruiting that way.
They fail when they are a showcase. A cohort of autistic software applicants, carefully accommodated, while the default applicant tracking system still runs a timed game and a video score, is not an inclusive hiring practice. It is a side door. Everyone who does not know the side door exists, or who is ADHD rather than autistic, or who will not disclose, stays in the machine.
The default process has to be defensible on its own. The alternate path is an addition, not the compliance strategy.