They are not refugees, Ukrainians which were invaded and are genocided by their country, for whom they did not give two shits about for whole 7 months, are refugees.

Wtf are you on about? They are not "undesirables" in your analogy, they are the Nazis.

And no, we don't need any more Russians here, nor do we have any obligation to take them in. We will most likely have another huge wave of Ukrainian refugees thanks to Russian invasion and how they deliberately target civilian infrastructure to increase humanitarian crisis. It's not really smart thing to do to have both oppressors and oppressed in same place as it will bring more tensions and clashes.

Also - why would anyone waste their resources on doing checks on each and every one of them in case they are just spies/saboteurs like we see in Norway/Finland, when those same resources could be used to help Ukraine?