Those don't look like BMP-2Ms to me.
BMP-2Ms have double ATGMs mounted to both sides of their turrets:
The one's in the video only have a single ATGM tube and it's in the middle and on top of the turret:
You know what has a single ATGM tube mounted on top of the turret? Ukrainian BMP-2s:
It's interesting to claim they are BMP-2Ms (which would be a model that only the Russians would have) instead of saying they're BMP-2s (which both sides have). I think there is some good propaganda and PsyOps going on.
It's a clever move. When you have equipment that looks similar enough to everyone who isn't a tank autist, just send out someone with a smartphone and a can of white spray paint, and you can make your losses look like victories just by spraying a white Z on the sides of your vehicles. Clever move by the Ukrainians, not bad at all.