As they say, if you've met one autistic person, you've met one autistic person. It's not just that autistics are all different the same way allistics are all different; compared to the breadth of the entire autism spectrum,
allistics are all pretty much the same. You never know what you're going to get when picking from the autistic box of chocolates. Maybe a savant, maybe a person of average intelligence but remarkable coping skills, maybe a person with not much of either.
As for "autistic programmers": for those of us with the skill to program, programming is a much better career choice than most, but even that is changing. Since the internet bubble of the mid-late 90s, allistic people have taken up programming in droves. The promise of easy money and prestige made programming a much more palatable career choice for allistics than it had been in the past, and now they've pretty much taken over. Programming is now a social activity. Cubicles are a luxury; the boss insists that seating everybody at long crowded tables with enough room for one laptop per seat, where everybody can hear everybody else's noisy conversations, makes the workplace more "collaborative". You are expected to be interruptible at any moment. Meetings are more frequent. ("Stand-up meetings" have had the effect of increasing the frequency of the weekly meeting to daily, while the original promise that they be short is falling by the wayside.) Some shops have enshrined the doctrine of Extreme Programming to such an extent that you are not permitted to get any work done without another person very close at hand, watching every move you make. Articles for employees state, in a very as-it-should-be manner, that the relevant criterion for determining who gets hired, commended, or promoted is not technical prowess but rather "soft skills", which bears out in reality as the number of tech startups founded by bros and hipsters who only hire "cultural fits" (autistics don't really fit in in any culture) increases. And books and seminars tell the boss that the person who prefers long stretches of working alone because that is how they get their best thinking done, is a danger and a threat to the organization and must be eliminated.
So in the modern workplace, hiring an autistic is indeed a very poor choice. Unless you can tailor the environment to their needs -- which approaches impossible unless you know them personally -- you're probably better off hiring the "cultural fit".