Best case scenario - roommate is an A-tier troll.
theturtlemoves
If you live in a country where you have to pay for basic healthcare, and you have an option to be paid for a blood donation you would have done anyway, then by all means take them dollars. The issue is that people who shouldn't be donating - either because it will put them in danger (e.g. they are already too weak), or because it will put the recipient in danger (e.g. because they have some serious infection) will now be encouraged to donate. This is why pretty much every other country bans payments for blood donation.
China already has the capacity to take on the US hegemony both economically and financially.
When you are the only country with a chance of winning, and when defeat would mean another century of waiting for the working class (and who knows how bad climate change will get under capitalism), wouldn't you want to be absolutely sure of victory before making your move? And would it not be better to get as many of the neutral countries on your side as possible first? Or even to have the request for an alternative system come from a neutral country / ex-US ally who is now being bullied by the US, so even the local bourgs in all the other fence sitting countries can see who is their friend and who is their enemy?
Dudes rock. (Ladies too, if they're into it.)