If you think <300k/yr is not middle class, I think we are coming from such different places that we cant have a meaningful discussion.
I'm just going to put this out there:
https://www.statista.com/statistics/203183/percentage-distri...
The propaganda message is that any improvement for the people at far left (with brown skin, in particular) would be at the expense of people immediately to their right. The other lobe, off-screen, that could afford everything, is invisible. The program has been a fantastic success. Champagne corks are popping every year, but most especially in 2020, when the right lobe shifted quite a ways further right.
I have some relatives in the other lobe. Their lives are very different from ours. Their kids' lives are very different from our kids'.
And, get the income not reported as "household income". Income of most millionaires does not show up on there. Jeff Bezos's and Trump's incomes are not on there.
None of this is accidental: it is the consequence of a specific program started about 1970, outlined in the Powell Memorandum, to grab control of the levers of power. Perhaps the most important factor was using military-grade propaganda methods to get the poorer half of voters voting against their own interests. It has been running for 50 years now, and has been a roaring success.
Kids come out of college now saddled with decades of crushing debt, facing homelessness after one medical or legal hiccup; scared voters are easily manipulated. Half the nation actually voted for an out-and-out con man--twice!--pretending to represent them while doing everything imaginable to grind them down further. Meanwhile the opposition has been forced to pray to the same gods, and depend on hedge funds to finance a half-hearted alternative that has to use a vocabulary created by the propaganda machine.
The amount of money generated by the US economy has gone up and up and up since 1945, but the amount collected by regular people--the less-than-99%-ers--leveled off in 1975. All the rest has gone straight to the pockets of those at the very top, even minting billionaires left and right. Make no mistake, we could all be fantastically better off given pretty small policy changes.