Yeah it’s a nonsense. Argentina and Turkey have atrocious economies, with inflation at crazy levels. Turkey’s is at 60% and Argentinas is at 143% currently, on a background of years of terrible economic decisions. Their local currencies are effectively trash so it makes absolute sense for Steam to move to dollars if they’re going to continue bothering trading in those countries.
I don’t understand? You can download Dosbox and Dosbox-X in desktop mode and add them to Steam like other apps. Why do you need a website?