Belorussian vs Russian has little to no difference in terms of contemporary cultural background. The references we see in this demo clearly are what the whole Soviet Russian (Russia+Ukraine+Belarus+Kazakhstan etc) cultural space has been exposed to during the recent decades: American + Some European + domestic Soviet Russian retro + some Japanese (anime). This already looks extremely cool (a masterpiece of art!) yet it can be made even cooler (more interesting, also potentially a work of cultural science) by expanding to include more ethnically niche memes from other cultures.