It makes me sad that we allowed hundreds of billions in tax dollars to flow to American weapons makers even as millions of Americans are forced to sleep in tents on sidewalks.
I think this issue has nothing to do with money.
Do you have a source for this?
Plus, the people that make this argument don't actually want to help the homeless. They don't advocate giving the homeless money; $10k each would be $6 billion. Leaving plenty for Ukraine.
It wasn't about weakening Russia. Russia is weakening itself, by putting so much of its economy and infrastructure into a fight that it can't win even with a much smaller opponent. It has destroyed its own army and demonstrated the inadequacy of its military technology.
It is, indeed, sad that the US has not solved its own homelessness and other problems. But pearl-clutching about that is just Russian trolling: we hadn't solved those problems before Russia attacked, either. And when Russia finally gives up in humiliation, we'll still have our own domestic problems. But not nearly as bad as the overwhelming incompetence, corruption, and horror of Putin's monstrosity.