If you have a thousand wealths and I have one wealth, that's worse than if I have a million wealths and you have a quintillion wealths.
No, not trickle down economics. It's history. The standard of living of the impoverished is dramatically higher than the rich of yore, and continually rising. And the reason is unequivocally capitalism.
Your view of the wealth gap is just not relevant because economics is not a zero sum game. The pie is not a fixed size. The promise of capitalism is that we get to grow the size of the pie. This isn't speculation or opinion. It's one of the few things we know for certain in economics.
Yes, the wealthy are getting wealthier faster than the poor are getting wealthier. But the one thing people who think that's a bad thing cannot explain is why that's a bad thing. It's not obvious that it's even possible to dramatically enrich everyone like capitalism very definitely did in the past without disproportionately enriching the few. That just may be a consequence of the only process of collective enrichment that appears to have ever existed on the planet.