I'm not sure. I mean the USSR didn't allow people to leave that easily so by the late 80s there were plenty of those who were happy to see it go or even worked

I'm not sure. I mean the USSR didn't allow people to leave that easily so by the late 80s there were plenty of those who were happy to see it go or even worked actively to dismantle it. A million or so educated/young/possibly most productive people leaving is terrible for Russia long-term but it seems that it just strengthens the regime by removing a significant source of internal opposition.