Not everything should be told honestly at all times.
That means you can lie whenever you want, so no, I did not misconstrue what you said. You just said it again here, very clearly. And it is a classic case of diversion to present this as not telling the whole truth. What Mormon "authorities" do is LIE. Is it ok to LIE? They said no, not under any circumstances, even holding back the truth. (Although they seem to make an exception when it comes to church history)

You said yes. But that is NOT what they teach investigators about being honest. It is a LIE to deceive, and not telling things honestly at all times is LYING. What you are advocating totally contradicts this:
Truth or untruth is not always altogether a matter of literal language, but often of implication, of inflection, of innuendo, of subtle suggestion. A clever person intent on being untruthful can give a false impression, even when his literal words can little be called into question.
Jo Smith's Abraham was INTENT on being untruthful (That Sarah was NOT his wife), only his sister, so that was a LIE. And Jo claimed that God was the one who told Abraham to do it.