Good thing Russia is known to be such a welcoming environment for people of colour.

If all you require a warm bodies to do menial tasks or low- to no-skilled labor? Sure, Pakistan and Africa will be happy to provide these.

If you are trying to rebuild your high-tech industry, however, you require educated people.

And why would these go to Russia if they can go to Europe or the US? Immigrating to Russia with possibly be easier, but it’s still Russia…

Russia's attractivity to foreign workers depends the availability of convertible money (sending money out of Russia is currently probably a bit of a problem and will stay so for a long time) and their security (which is probably not a given, with the rise of fascist state the security of foreign workers will not be the highest item on the list). So while everyone likes oil money, not many people will be likely to immigrate to Russia for that.