Honestly a delusional move. Culturally, Reparations are paid by the loser. Even in Ukraines victory scenario where they kick Russia or of their territory, Russia will not be anywhere near desperate enough to admit defeat at a level to pay reparations. Russia would simply start retooling for another go. All this does is give Russian propaganda more fuel to justify their point of view, without helping anybody.
This is propaganda to keep the notion that Russia will be held responsible even though there is absolutely no way to guarantee they can make that happen, which in turn helps to maintain approval of policies like sanctions and so on, which is how the EU "makes them pay". If you are in favour of that kind of direction, I think it's a positive thing to do, since it favour your narrative