imo the author is playing dumb. He really doesn't know the difference between "starred" and "important"? He really couldn't be arsed to hover the important icon

imo the author is playing dumb. He really doesn't know the difference between "starred" and "important"? He really couldn't be arsed to hover the important icon next to a conversation for a clue? Couldn't spend 20 seconds googling it? Does he actually have a suggestion for a better one word summary of the features, or does he think that a feature shouldn't exist if it isn't crystal clear to 100% of users when they encounter it for the first time?