There is a reasonable chance that the throwaway poster intended to be divisive, whether as a troll or something more intentional.
I know it's hard to believe for western people but there are lots of people in Russia who completely obsessed with ideas of "unique Russian identity", "God chosen nation", "Russian world", "saint Russia vs. soulless American imperialism" etc.
Putin understands feelings of this part of society and successfully exploits this in order to push his own agenda. For example: