[sergioisidoro]

I tend to agree with your statement, but I have to acknowledge that emotional intelligence is massively important for what we consider "intelligence"

Recognising when you are in "defensive" mode in an argument, when you're just defending your pride instead of reason, is one of the most valued skill you can learn.

So I can get behind the statement that self-soothing, and being able to put your ego in the passenger seat is indeed something that can boost your "intelligence" (as in, capacity of acting on reasoning and logic).