He's serving the American bourgeoisie moreso than Russia.

Which, to be clear, is worse than if he was serving Russia. The American bourgeoisie are the most direct enemy to the American people, they suppress our wages (Putin doesn't), they shift the tax burden onto us (Putin doesn't), they bust our unions (Putin doesn't), etc. Anything that makes them stronger makes us weaker, and if we could burn their wealth and power we would be better off even if we didn't get a penny of it, just because their boot would be removed from our neck. That's not to suggest that Putin is in any way a friend to everyday Americans, but he is a more distant and removed enemy compared to our direct, primary enemy, the rich of our own country. I don't know why there's this need to treat Trump as secretly in league with an external entity, as if being what he actually is wasn't the worst thing he could possibly be.