LOL "people who use ProMotion". You wanted to say 'people who don't use godawful mspaint'.
The main question is not what program you used or how, but why the fuck would you 'copy' a photograph when you can just colorreduce and then clean up. I don't believe there is a single person in the world stupid enough to do it by hand. No matter how careful you repixel it afterwards, the question always remains: why the hell?
This is not the first nor the last picture like this on PJ and it's just silly to go through all the fuss each and every time. If this was my board, I wouldn't approve this kind of 'art' (haha) pixelled or not. It's not my board tho, and sedge and others obviously allow this stuff so deal with it. You don't have to like it or give it points.