This specific quirk starts at $500k peaking at $600k and phasing out towards $650k collective yearly income.

Agreed that it’s W2 earners paying taxes at high rates than business/capital owns, which is why it’s a mostly income tax system of collection. This is where many of us see this as an unfair tax burden being put first on people not businesses nor its owners and leveraged mostly towards income of w2 workers. People don’t pay taxes on our their income after expenses and extensive rebates like businesses/capital ownership.