You clearly don't understand what the definition of 'progressive' tax is. It's 'progressive' in the sense that marginal tax rates increase as you make more money.
It is not 'progressive' as in 'progressive politics' or 'economic progress' or any other left or right politics.
Saying something is a 'pregressive tax' isn't a value judgement , it is just a description of the curve of the tax rate, i.e. the opposite of a regressive tax. As for 'discouraging people from trying to earn more money', that is a debate about rates but remember marginal tax rates never allow a situation where making a higher salary would leave you with less net income.
It is not 'progressive' as in 'progressive politics' or 'economic progress' or any other left or right politics.
Saying something is a 'pregressive tax' isn't a value judgement , it is just a description of the curve of the tax rate, i.e. the opposite of a regressive tax. As for 'discouraging people from trying to earn more money', that is a debate about rates but remember marginal tax rates never allow a situation where making a higher salary would leave you with less net income.