It seems you're disagreeing with a statement I never made.

The question was "If they did have the same syntax, would they be different languages?"

I replied: "Yes, they would be different because their semantics would be different"

I never said it would be a good thing. And by stretching your analogy to the territory of food it only becomes weaker (with food diversity is a goal by itself). Also it can be argued that using the same operating system for the vast majority of tasks is desirable.