I think OC made a poor word choice with "dumb". Whether they intended it or not, no human language is dumb, they're all valid and functioning. I've studied Fren

I think OC made a poor word choice with "dumb". Whether they intended it or not, no human language is dumb, they're all valid and functioning. I've studied French for many years, and will never have an intuitive sense of noun genders, it's just something I have to memorize by rote. The same is true for how complex structures of pronouns and modifiers seem to collapse into a compressed string of apostrophes when used informally. But when I ask French people how they know the gender of a noun, they shrug and say "I just do". The same is true for English's infamously fussy collection of special cases for grammar and spelling, which (as a native speaker) I never remember having to consciously learn how to navigate in speech or writing, though I must have. Your native language seems natural to you, including all the parts that outsiders may call dumb.