Social thinking is a flat hierarchy. You accept everyone, and if someone stumbles, you pick them up. This interrupts the sorting process.

Without sorting, your society becomes a mob of unruly people each trying to be more unique than the others. Corruption flourishes, and good ideas get ignored because most of the people don’t understand them.

The mundanes are the people who will never add anything other than their labor, by which they follow the leads of others. They are raw material like other unsensing labor. They may even have a trade or be competent at a specific task, but it’s questionable whether they have intelligence. What they have is probably best described as a task ability, or a thin intelligence, or a partial intelligence.

If we want to end humanity’s problems, we must sort humanity, and put the ones at top in charge.