I think that might be colored by the "culture" of tech workers where you happen to be, that has certainly not been my experience. The smart folks I've met in tech, including the outright geniuses, have been almost universally well-rounded with a strong set of "soft skills" and typically a widely varied set of interests outside of their work specialty. Indeed, I'd describe them as "fully fleshed out human beings", perhaps more so than the average human being in fact. The number of "smart tech workers" I've come across who I would describe as "high-functioning autistic savants" I could count on the fingers of one hand, and even then that description would be a decidedly uncharitable characterization for them.