I think it’s a bit of a stretch

I disagree. In large text calling civilians responsible for the war and then depicting them as combatants has very clear implications.

Russia is the only one firing rockets and drones at hospitals and schools

Not really true unfortunately, there's the starobilsk dormitory and the Novoaidar district hospital strikes off the top of my head not to mind the shelling of civilians in the Donbas since 2014. It's not really a one side or the other in this war when it comes to crimes (not that it has ever been such is the horror of war).