I think inequality manifests itself in two different ways. One is the one you describe, and I agree, meh. But the other is perhaps the disconnect between media

I think inequality manifests itself in two different ways. One is the one you describe, and I agree, meh. But the other is perhaps the disconnect between median wealth growth and GDP growth. It appears in the West increase in economic prosperity is disproportionately growing just in the top decile (loosely speaking). But you still have everyone else - doctors, builders, teachers, garbage collectors - who do essential work and have to feel part of that growth to put an effort, which everyone needs. The society can't afford them "silent quitting". It's not that it's fine to be upset that someone else has a private jet and I don't. It's the disconnect between GDP growth and stagnation or decay in standard of living for the median citizen. It's more like, why should I work harder and harder for a mythical GDP growth that seems to go to someone else's pocket, while public services are going to shit. UK is seeing this. Economic outlook is somewhat grim, but the UK is not officially in recession. But for most of the society, their personal economic situation seems to be getting worse. The only way I cna square these observations is that due to inequality, the top bit is growing and the bottom bit ain't. And that is IMHO unsustainable.