As for the rest of the things you claim you never stated, you said them in the way you wrote the sentence. Unspoken. And some of it, apparently you can't see the reasoning behind it, but that is expected.
As far as health and weakness go, a teeter-tottery 4 can be broken just as easily as a 2.... people looking for victims look for those with poor values and with unhealthy dispositions, things they can easily prey on and manipulate, and use. And those things are what weaken us, not personality type.
Furthermore, I totally disagree that 8's don't get hired as managers. That's funny to me, considering that I live with one. Corporations can thrive with 8 managers.