That sentence makes no sense to me. Progressive tax rates are not regressive, and I don't see what "live in economy" means, nor how it applies here.
There's a really good Harvard economics study on this - I'll find the link if you really want to follow it, but the net is that the price of "progressive" taxes just become buried in the cost of goods. In the US, the income tax increases the price of goods about 22%. If a single mother working for minimum wage is buying a loaf of bread for her kids' sandwiches and paying $3.50, she's paying about half a dollar of that cost to pay for the income taxes of all the producers upstream. She pays a 22% tax at the register, but it's 'embedded' in the cost of goods.
Since she's participating in the economy, she can't escape the "progressive" taxes - they're all regressive.
That equates to a little over $10k/year per person, including children.
Yeah, many governments get by pretty well with far less than that.