With regards to the Foster Emotion move, it’s actually a refined type of threat based soft move. Think of it as an emotional knife which can be disarmed by expressing emotion. If you ignore the threat by remaining stoic, you internalize the emotion and suffer harm by boosting the stress track.
Fun fact? Foster Emotion and Inflict Harm are mechanically and narrative overlapping. If a goon pulls a pistol on ya, you can take them out with rage, show off with ego, or even flee. Threat is dealt with either way, and the same consequences are dodged.