The problem with most Eastern Europeans is that they'll sing and dance on anybody's 5 cents. You can buy and sell them and they will always be eager to serve.
That is frankly revolting to Russians who are able to maintain long term loyalties, and will be heartbroken to betray long term commitments. Russians do not hate Eastern Europeans, neither do they want to invade and occupy their countries, but Russians do despise Eastern Europeans now. Every stupid thing you say gets laid on these scales.