Yelling doesn't prove your point, and you conveniently avoided answering the most important questions, like where and what household size?

First, there is no credit that offsets payroll tax.

A single person with $50,000/year income is not negative. They'd have about ~$34,000 in taxable income and pay ~$3,800 in federal income tax. A 2 person household filing jointly with no kids would still pay about $1,800.

A family of 4 (2 children) with $50,000/year gross income gets a benefit and probably keeps all of that (or a bit more) in take-home after the standard deduction, child tax credit, EITC. At 155% of the poverty line, they're probably above the SNAP gross-income cutoff but they'd probably get ACA premium subsidies and reduced-price school meals.

But they're still living at 50% of the median household income for a family of 4 and you'd have to explain how you think 4 people living on $4,100/month is anywhere near decent or easy in most of the US. The median rent alone for a 2 bedroom in the US eats up over 40% of that amount.

A family of 3 (1 child) in most states will not be negative after payroll and state tax at $50,000/year gross household income.