Comparing bike riding and innate talent for math has to be one of the stupidest analogies I have heard in the last few months.

How many people can ride a bike? Everyone, all humans, except those with certain physical disabilities can do it.

How many people can code software competently or do science? Not many.

The fact that you cannot acknowledge your own childhood experience in school, that is, that you had smart and stupid schoolmates, is very telling that your comment is ideology based.