> Both devices capture identical images.
This is so obviously false. The photos definitely don't look identical. If you're carrying a DSLR, it's a darn good bet you believe it'd take better photos than your phone. And someone who does so is going through the trouble of carrying one is more likely to spread the photo publicly than someone who's using their phone. Hence the stronger reaction.
It's always sad to see when people tarnish a good point with bad arguments. Doubly so when you're accusing other people of acting irrationally, based on clearly false premises. It hurts the cause you're trying to advance rather than helping it.