Developing a skill should have a payoff. When someone does not perceive as great a reward in social interactions, the motivation to develop their social skills

Developing a skill should have a payoff. When someone does not perceive as great a reward in social interactions, the motivation to develop their social skills is less. If social skills were on a tech tree, introverts would put points into the "polite disengagement" branch first, while extroverts are still putting their early points into "bonus friend slot" and "multiple-participant schedule coordination" and such. Some people might just recruit an extrovert for their sole friend slot, drop a single point on "Irish Exit", let the friend set up all the social events, and just vanish whenever they're done. That's a perfectly reasonable social skills build, up until the extrovert reaches their friend cap and drops the introvert into the acquaintance pool, to free up a slot for someone with better synergy bonuses. And this is the sort of thinking that tends to drive off people who don't view (or don't want to view) the universe as a simulation that could be hackable with a better understanding of the data structures, and who don't want to have nerdy, speculative-fiction conversations about whether "deflect blame for loud fart" is a skill or a perk.