@Felcon If language is a mechanism for expressing ideas and reasoning, it should reflect our cognitive processes that generate those ideas, so " [...] Just because you use a mechanism for expressing your ideas and reasoning, doesn't mean that underlying reality has to confirm in any way to it" is a bit contradictory. Are our cognitive processes not included in reality?
The existance of a universal grammar is a specific hypothesis that requires empirical evidence. It's tiring to hear Chomsky's ideas parroted despite no empirical framework to stand on. What ideas could we be lacking? This argument is similar to String Theory proponents who kept pulling ideas out of the ether to support an unsubstantiated theory.