I strongly disagree. It's not mere "incompetence" that the fakery shows a more dramatic amount of damage, over a wider area, than actually occurred.
The political point is perhaps not obvious when removed from the larger context of Hajj's fakery -- he's clearly trying to paint Israel as using excessive force. And the nice man is not alone in this: note, for example, today's backpeddling from claims of "40 killed" to "1 killed" in an Israeli attack.
I find it surprising that someone who paints himself as savvy to the ways and means of media manipulation should be unable to see this faked photo as part of a larger context.
Your read on the original and the doctored photo differs from mine. Where's the "more dramatic amount of damage?" All I see in the doctored photo is a darker smoke cloud.