1) You are taking photograph (using DSLR on a monopod) at an event and were standing at the '3rd row'.
2) The external flash of the photographer at the '1st row' is blocking your view.
Would you move your position or ask the person at the '1st row' to lower his camera ???
1) The guy at the 1st layer is about 1.80m
2) He is using a prosumer camera with an external flash.
3) He is using LCD to frame his picture and the LCD is raised to his eye level. Obviously at horizontal position, the flash will be way above his head.
Okay I admit. Actually I'm the guy at the 1st row. And I'm dead sure that the LCD is at my eye level because anything above and the color in the LCD would starts to darken.
Edit01: To see the images on the LCD clearly, the camera have to be at least 15cm away to avoid being cok-eye after the photography session.
Edit02: I found a picture from my collection to illustrate my point. Look at the few digicam in the picture. Do you think they are holding too high ?
The answer is NO.. because when they raise the LCD to the eye level, this is what the person at the back will see. Imagine they mount an external flash. It's going to be a lot higher.