Unfortunately these things are reportedly happening, the sentiment should be anti-Putin but ends up being anti-Russian, mostly thanks to Russians like these: https://t.me/glavredinfo/61841
If you don't mind me asking, why should the sentiment be anti-Putin? What makes you think that the war is not being supported by a significant fraction (if not majority) of the Russian population?
The point of my post was that it is not enough to help anti-Putin (and by that I mean anti-current-power-system-of-russia) leave Russia. They are as much victims here as Ukrainians who fled the war, but are sometimes treated badly.