There is a widely accepted and straightforward thinking that humans has ideas, which are expressed in languages, and that languages being ambiguous is problematic: this I'm starting to have doubts on.

Maybe we don't have clear intentions in the first place, maybe languages are not just ambiguous, but only meant to narrow realms of valid interpretations down to a desired precision, rather than intended to form a logically fully constrained statements. Maybe this is why intelligent entities are needed to "correctly" interpret natural language statements, because an act of interpretation itself is a decision making and an action.

Just my thoughts but I do think there are more to be said than "natural languages are ambiguous".