Ask HN: Do Tech Companies Segment by Gullibility?

I am trying to be fair with the title. By Tech I mean ad-driven "tech" companies like Google and Facebook. Companies the surveil, aggregate, and sell access to data.

If you can target by age, wealth, region, interests, etc. Can you target by gullibility or vulnerability?

I am sure these companies have figured it out. Maybe mental/disease issues like Down Syndrome, Alcoholism, or gambling addiction. Perhaps age deterioration where general acuity is lessened or dementia. Teens more susceptible to peer pressure.

I am sure there are a lot of other possibilities. Curious if these are actual segments that can be targeted, directly or indirectly?

(no I don't want to target them)