I take pedantic exception to that - the comma isn't changing the pronunciation of a word, it's changing the structure of the sentence so that where before conte

I take pedantic exception to that - the comma isn't changing the pronunciation of a word, it's changing the structure of the sentence so that where before context made it clear that word A was meant, now it's homonym word B is the only option. It's not one word changing its pronunciation, it's two words that are written the same but pronounced differently. Very important distinction. It would be interesting to know if there was an actual case where a comma changed the pronunciation of a word.