Larry Lambo
Superstar
The average man has zero game or mouthpiece yet dates and has relationships consistently throughout life.
Depends on what your baseline is.
If your baseline is the most socially awkward, inept, low-self esteem, weak dormat, WOAT personality, then the average man does have some mouthpiece.
If your baseline is the social skills that most people develop through friendships, socialization, and mentorship, then yes the average man doesn't have additional mouthpiece, beyond that.
What comes across as "normal" for some dudes that came up a certain way, might be "game" for a dude that doesn't have that background. I learned to portray myself with confidence, and as a winner to women, when in my youth I just said what was on my mind, a lot of which portrayed me in a manner that didn't appeal to women. I become more strategic in how I present myself and my background and it provided results. A lot of men were socialized to be that way from Day 1, and it's just "common sense", but it's something learned for other men.