I find this to be true, and it's reinforced constantly in movies about nerds. They can take apart and put together a computer or program but can't use the same intelligence to prompt women, if you will.
But I've always wondered why if the guy can do the same with a motorcycle or car, he's not a nerd and women will find him masculine. I think some of it is social feedback. Women haven't traditionally seen tech geek hobbies as sexy, so the geeks know this and go along with it. While a car or motorbike is something tangible that can literally turn a woman on, she sees its value and so she reflects it back to the guy, who then feeds it back to her.
Just a theory, maybe I'm wrong.