This is true, though to my knowledge if we agree to an embargo (as in, you ask, I actually say "Yes" as opposed to you just blasting a press release to my inbox) then we don't generally break them. At least that's my policy.
Not saying you lie about honoring them (I can personally say you never have lied to me about it), just that a public "we don't honor embargoes" stance isn't always a valid indictment.