Let me try to explain this
oddity,
General Sir.
IMO, this idiocy can be attributed in two words: "Popular culture". The roots of the assertions that "Math is for nerds" and "Only geeks use computers" can be traced back into the age of immaturity known as middle school and high school. In that environment, achievers and smart kids are looked down upon due to the popularity of underachievement.
So, if you are good at math, in your world (at that time, school), you are ridiculed for being a "nerd". It is their loss really. In 5 years the nerds will make 100 times more money than all those jocks and cheerleaders put together.
The thing is, if one person spends his meager brainpower memorizing sports stats or you spend your considerably higher level of brainpower memorizing Star Trek ships doesn't really matter. Let them do what they want. To hell with them.
If popular culture dictates that knowing math makes you a geek, then I am a geek. And proud of it.
BTW, in the 1972 World Series, the Oakland Athletics beat the Cincinnati Reds, 4-3.