Such is life, sometimes people have an unfair advantage.

But in this case, having a common language is still much more valuable than the unfairness that this common language is the mother tongue of some.

This is such an odd exaggeration; the number of words you have to learn to type are just abysmally small. You don't have to know what the word 'integer' is to know how it works in your code.

I-N-T, three letters, this symbol means that the number does not have a fraction associated with it.

As for the code base and documentation? Well, wouldn't you rather a lingua franca as opposed to trying to Google Translate your way through comments?

English keywords often have only the most tenuous links to their vernacular meaning. It's an unavoidable side effect of how different spoken and programming languages are. Compared to the difficulty of learning programming itself, remembering particular keywords is a tiny fraction of the mental burden.