That's why someone's self-described position means nothing. Something like 80-85% of drivers describe themselves as "above average" at driving, too.

The upper limit and the median of the household income quintiles as of 2022 are:[0]

  Lowest: $ 30,000 / $ 16,120
  Second: $ 58,020 / $ 43,850
  Middle: $ 94,000 / $ 74,730
  Fourth: $153,000 / $119,900
     Top:        - / $277,300

I think getting into the weeds on whether $80k or $100k or $120k/yr is a middle class sort of misses the point, but at least with my eyes it is hard to argue you're middle class if you're making more than about $150k at the most.

Even the GP, which I directionally agree with, says "upper-middle class is people making ~$200k/yr" but you're deep into the top quintile by that point, probably top 10%. I don't know what percentile I consider "upper middle" but it's definitely lower than top 10%.

[0] https://taxpolicycenter.org/statistics/household-income-quin...