Why? Because a bit of autism tends to make you good at your job but allistic people can always seemingly tell you're "off", no matter how well you (try and) mask.
And ultimately career progression is a social game. It's not about being good at your job. It's about whether people like you. Sure there are some outliers who get far on technical ability but they succeed in spite of this not because of it.
So when you say you don't enjoy the "business" of tech, it means you've reached your ceiling where it requires influencing other people as direct reports, as a tech leader or both.
If you're in this boat, and a lot of tech people are IME, then my advice is to make your bag while you can because you will be the first to be discarded and you will suffer at the dark, ugly side of tech, which is ageism.
Avoiding ageism is largely a social exercise. If the leadership at your company likes you, they'll keep you. If they don't, they won't. You'll find yourself randomly picked on a round of layoffs sooner or later.