Tbh, no point in arguing since both USA and Russian Empire has done the same thing basically, except Russia didn't go out of their the way to another continent for spice and shit and most people just joined, sure, if they refused they were conquered, but that's how everybody have done it, if they even tried peaceful approach at all. Nobody put noone in reservations and shit.
But I guess this were british, spanish, french and so on in your mind and USA have nothing to do with it?
And before you play your "communist genocides" card. Sure, USSR did some shit when trying to unify everything like force one language for all and stuff, some would even argue genocide and holodomor, although tbf, every nation had it shitty, yes, including most russians, it's just that now every independent country tries to get reparations for themselves exactly and doesn't give a fuck about others, so that's why we hear so many different genocides in USSR from all over the place.
And for your other counterargument. I do think Putin is bad now and was sitting in his chair for way too long. Should have been gone in 2008 max.