What do you think of the phrase, “Beware the men who warn you.”?

The implication behind the phrase is that the man who warns you “hey, this guy only sees you for sex” or “that guy will treat you like shit” is a man that will do and is thinking of doing those same things to you but knows how wrong it is and wants the woman to see him in a better light than who he really is.
What do you think of the phrase, “Beware the men who warn you.”?
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