I would imagine the comment was more to convey "don't hurt my feelings" than to encourage civility, which is a more difficult concept. For ideologues, good mean

I would imagine the comment was more to convey "don't hurt my feelings" than to encourage civility, which is a more difficult concept. For ideologues, good means rational means civil means moral means <insert political ideology>. Once all words boil down to <ideology> or <not ideology>, a person can't express or precisely articulate ideas, which manifests in incoherent language.