When descriptions are levied upon things, politeness is irrelevant: things are not people, and have no feelings that can be hurt. It is irrational for a person to take offense on behalf of things.
instead of reverting to your dogmatic principles, I will ask you to instead consider why someone might dislike having their interest called "objectively harmful and masochistic". do not try to convince me of why you called it that, because we're trying not to rehash these arguments, and because, quite frankly, you're wrong. either you need to gain some perspective or gain some restraint.