> The war isn't something that Ukraine wanted, but it was forced on them.
I rate both of these claims to be indisputably true.
> Would you deem tweets that encourage donations toward Ukraine's military defence to be "promoting war"?
> How about tweets that boost morale of their defence forces (well-produced propaganda videos, etc), [are they promoting war]?
The answer to both of these questions is indisputably yes.
War propaganda from the side which I support is still war propaganda. It doesn't stop being war propaganda just because it's also in the right. Remember "loose lips sink ship"? It was a WW2 American propaganda slogan designed to address German u-boat aggression. America was plainly on the right side of that conflict, yet those posters are still cited today in American classrooms as an example of war propaganda, because that's indisputably what it was.
Morally in the right and war propaganda have never been mutually exclusive.