I have. I’ve still never seen it. What I do constantly see in those threads is dehumanization of Russian people and calls for mass genocide of them, though. Calling them orcs and talking about how they all deserve to die.
I don’t believe you, to be honest. One can acknowledge Russian security concerns (like multiple U.S. military officials and many high members of the UN have) without praising Putin. And I’ve still never seen a single communist say anything good about Putin. On any website.