I would guess that they're defining "upper middle class" via income quintiles rather than via lifestyle. Those numbers roughly line up with the boundaries for the 4th quintile in 2017, 77k-126k. 2020's fourth quintile was 85k-141k.

> I wouldn’t consider that an upper middle class lifestyle.

I don't know that the conceptual upper middle class lifestyle actually matches the reality anymore. I think that's true of most quintiles. The upper middle class lives like the middle class used to, the middle class lives like the lower middle class used to, etc.

That "upper middle class lifestyle" upshifted and is the domain of the lower rungs of the top quintile now.