Whether that's ignorant depends what type of tea you're drinking. Steeping at 212°F (boiling) is the recommendation I've always heard for nearly all black teas

Whether that's ignorant depends what type of tea you're drinking. Steeping at 212°F (boiling) is the recommendation I've always heard for nearly all black teas and herbal teas. You are correct that lower temperatures are better for most green, white and oolong teas.