It's interesting to get down votes for sharing link to wikipedia. Is taking a look at functioning flat-tax systems of other governments not even worth investiga

It's interesting to get down votes for sharing link to wikipedia. Is taking a look at functioning flat-tax systems of other governments not even worth investigating, or does the very idea simply clash with some folks political agendas? Several of the nations are able to provide for both social welfare (including free secondary education and basic healthcare) as well as national defense on a (typically low) flat tax. Russia's 13% stands out for a large country and Estonia's 21% for a small country.