I'm not a big MJ fan but I can see the merit in the piece. The artist using split up shots this way successfully evokes MJ's signature pop-n-lock dance moves that, even if you aren't a fan, you'd have to agree are iconic. As a tribute to MJ it is more successful I think than a standard portrait.I think the sense of 'anybody can do that' is a very common human emotion. Remember that great athletes make it look easy, dancers make it look effortless, public speakers make a great speech seem natural, and great art often looks like it just 'accidentally' happened.The best way to learn how challenging even copying an idea is is to give it a go yourself. Try creating your own photo montage and putting it out there for critique'. The internet makes getting honest feedback from the general public pretty easy. It's worthwhile even if you fail because you'll be that much more knowledgeable about how truly hard it is to come up with an original concept and execute it.