Yea it's all in the delivery
It's not that faith can't be challenged; it can and should be, especially in a public forum about religious beliefs. This is obvious.
Of course one can have whatever opinion they choose and take whatever approach they like but if it's to denigrate and insult, it just seems wrong and little if any good will come of it. This assumes any good is intended of course.
As has been said, whatever gets you through the day