I haven't seen anyone mixing wine and vodka there, it's just not a thing.
Russia and Balkans and the austro-hungarian region preferring sweeter wines is a centuries old culture and a wine making tradition. The same goes for Georgian wines.
Vodka with wine... is that even a joke?
Fortified wine culture sounds more like Portugal to me, even though they definitely make it almost everywhere.
EDIT: typo
> The production of Soviet champagne prioritized quantity over quality. Grape growers uprooted acres of indigenous vines from Moldova to Tajikistan and replaced them with durable, high-yield varieties that catered to Stalin’s sweet tooth.
> The result was Sovetskoye Shampanskoye, a cheap, syrup-sweet sparkling wine for the ordinary Soviet worker.
https://www.singaporewinevault.com/busting-the-myths-around-...