That’s because “Support our troops” has never been about supporting the actual humans in the military–it’s always been about supporting the wars those troops are fed into and the administrations that wage them.
To be generous, some of it might also come from memories of shitty treatment of returning soldiers in the Vietnam era. But for all of my adult life, it has just been a rebuttal to people expressing anti-war sentiment. The exact same way that “Back the Blue” is a rebuttal to people protesting police violence.
I actually prefer it the way it’s executed.
Maybe I’m thinking way too much about this, but each panel obviously takes some time amount of time to draw, and likewise each panel portrays some finite amount of time–not just an instant snapshot of the story. So as the dog is yelling at him, his drawing quality is degrading as he is working on the panel, leading to an inconsistent quality within the panel.