I agree wholeheartedly that unconscious desires find ways to express themselves, but it's novel for me to correlate those who are disconnected from their emotions (i.e. push them into their unconscious) with those who are more likely to fall victim to cognitive biases, dissonance, etc. It makes a ton of sense; for example, it takes all of my mindfulness to stop myself during a discussion/argument and ask myself honestly whether I'm open to hearing someone's argument or if I'm just feigning openness while trying to get a point across that I've tied my ego to. Oh, the inertia of preconceived thoughts and biases.
This is very useful to know, so thanks for the light-bulb moment. It'll be easier to step away from discussions when I can recognize that someone will live and die with their agenda because A) they lack the mindfulness to divorce their emotions from their stance, B) their identity and ego is built upon this stance, and C) no one will let you come by and sweep away their identity/ego without a fight, especially when their emotions, repressed or not, are swarming.
I guess it's easier to trust the judgment someone who's aware of their emotions than someone who's got a glaring blind spot.