I think it's wise to hold back such comments unless you know all the facts. Slim.Slamma may tell us where the photo was taken, but I know of at least one such location where this photo would be perfectly legal: LAX.
Did you know there is a VFR Corridor at right angles to all four runways directly above the airport? You don't even need a flight plan to fly it VFR. Its on the Sectionals. I've flown it a number of times and it is WAY COOL. Further more, your assumption seems to be that he took it with a UAS. Not necessarily the case. It could have been taken from a helicopter flying through that corridor perfectly legally. No Photoshop involved at all. Sometimes it's useful to take posters here at their word.
BTW: Great photo!
Oh, and by the way, I did a little research...
https://www.cnn.com/travel/article/daredevil-photographer-jin-woo-prensena/index.html
The guy is a Master.