Callanish Stones

I may have upset another photographer accidentally while I was taking this photo. He came across and said "Don't you wish you'd turned up first thing this morning when nobody else was around?" I politely explained to him that it didn't matter too much to me as I was using a 10 stop ND grad filter which meant I could do a nice long exposure shot and as long as people didn't stand still for the whole time they'd effectively disappear from my shot, I said if he wanted to wait another 30 seconds I could show him the results. Instead he just walked off in disgust.

Not my fault he didn't plan ahead for his shot or get up early like he suggested is it?