I didn't think having to create a PSN account was that bad to be honest. I'd have preferred them to back down about the NProtect GameGuard rootkit that comes with the game.
A quick Google tells me there's a total of 196 countries. So, are we only talking about 6 countries served by PSN or are there radically different definitions of "country" at work here?
You're right it's more than 6. The 190 figure probably comes from the number of "countries" that were restricted from purchasing the game after (and only after) the PSN account linking was announced. Steam defines a lot of territories and unrecognized regions as "countries". Supported PSN countries are listed here https://www.playstation.com/country-selector/index.html
E: Actually some of the countries in the selector aren't supported for PSN either (at least PH), so I'm no longer sure if there is an offical list of supported PSN countries anywhere.
So if you already purchased the game and live in the other 190 countries, you are locked out of your purchase.