I would go against the grain and say that LLMs take power away from incredibly rich people to shape mass preferences and give to the masses.
Bot armies previously needed an army of humans to give responses on social media, which is incredibly tough to scale unless you have money and power. Now, that part is automated and scalable.
So instead of only billionaires, someone with a 100K dollars could launch a small scale "campaign".
"someone with 100k dollars" is not exactly "the masses". It is a larger set, but it's just more rich/powerful people. Which I would not describe as the "masses".
I know what you mean, but that descriptor seems off