The whole "x% of the people don't have inner monologue" is retarded and is most likely a transhumanist psy op to convince people they or others are not fully human. In reality everyone (safe for the severally mentally impaired) has such a voice, but some fail in recognizing and defining it as such. The whole thing is as scientific as the coof science, evo theory or climate change.

It's embarrassing seeing conspiracy savvy folks here taking the bait because it's politically charged: "woke libs are literal NPCs bro - here's the study". No, they are as human as you and me, but their fallen nature allows them to be ignorant, stupid and degenerate. It's a matter of free will ultimately and a moral issue, not a physiological or intellectual one.