Correct me if I’m wrong, but I think you’re trying to say that the phrase “toxic culture” signals something exasperating or frustrating to you about the person using it.

Is it because you don’t think that a culture can be toxic? Or perhaps that the phrase is overused or misapplied?

Or is it something else that you dislike?

You're not "a simple man", you're an agitator lashing out at criticisms of behaviour and culture.