No argument on that, but not the point. Also, "on the spectrum" =/= Autism, necessarily.
When you attend a frocking ceremony and see multiple Sailors exhibit behaviors consistent with autism the semantic discussion of spectrum v. diagnosable autism takes a backseat. Yet these Sailors could apparently do their jobs without getting de-nuked, so the relevant question is whether diagnosed autism should be disqualifying. Frankly, underdeveloped personal skills and difficulty understanding someone else's emotions seems more like a prerequisite for several roles, vice a disqualifier.