Yeah, it takes two to go to war. If Poland didn't want to go to war with Germany they could have just said no.
That quote was blaming the Federation for the war and also blaming every invaded country for being invaded.
The Dominion did warn the Federation off, and there was an opportunity to steer clear of war. Definitely should have mined the mouth of that wormhole sooner. However, every invaded country throughout time didn't "have it coming." A lot of suffering could have been prevented by the invaders simply staying inside their own territories.
Don't get me wrong, some wars serve a purpose.