send "all the money"? That alone tells me you have no understanding of American aid to Ukraine, both in scale and in nature. It's neither "all" nor is it "money" - the Americans sent old military hardware for the most part, and the monetary value is barely a drop in the bucket compared just to their yearly military expenditure that they'd spend regardless. Actual monetary support is much more of a EU thing anyways.
But sure keep whining about centre-right policies of the USA and the EU, calling them "far-left". Actual far-left people tend to not supportive of sending aid to Ukraine.
My problem with Lemmy is the lack of activity in niche communities. You're right that there needs to be a critical mass and arguably Lemmy has it, but only for the most mainstream, generic type of content. It doesn't have the mass to sustain any sort of niche, outside of maybe tech related topics because of the way the userbase is slanted.
I find myself going back there often because of that, but I hope that the userbase for generic content enough to sustain and grow, from where more active niche communities can spring up.