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.
This is like saying that American or Canadian has little to no difference in terms of contemporary cultural background. Technically true, but it's still a bit rude to confuse both nationalities.
Belorussian, Ukrainian and Russian people are ethnically and historically almost indistinguishable. Their main qualms are with cultural distinctions and relatively recent history (which is totally fair, and does not give the right for any of them to forcefully integrate/annex the others).
WASPs and Native Americans are ethnically, culturally and historically completely distinct peoples.
The American/Canadian example is almost a perfect 1:1 example.
It's a moot point anyways, no one was discussing war. You decided to bring that up as some sort of virtue signal. It has nothing to do with cultural similarities.
