Legally, you cannot fly FPV, but - and here's where my interpretation starts - that doesn't mean that you have to keep your eyes glued to the aircraft from takeoff to touchdown.
The FAA's intention behind the LOS rule is so that you have situational awareness about what is around the aircraft - from obstacles to wildlife to other aircraft. That is almost impossible to do if you cannot see it. FPV can allow someone to successfull navigate, but not to see all potential issues.
However, if you are taking pictures of the roof of a building, for example, and verify by looking at the airspace around the aircraft that there are no imminent safety issues, taking your eyes off the aircraft to line up and take a shot momentarily would not realistically be considered a safety issue.
When I do real estate panoramas, I fly the aircraft to the right altitude and then angle the gimbal down as I move to the right position to ensure that I am not over anybody. Then I engage Litchi to take the images. While it is doing its thing, I am watching the aircraft the vast majority of the time - watching not only for signs of drift or issues, but also for birds. I also look at the screen from time to time to verify that everything is working properly. I consider this to be in line with both reasonable expectations to accomplish the task and the FAA's goals to ensure safe flight.
As far as being labeled the "drone police", I believe that everyone should know the law and follow it. Since so many do not, I think it makes sense to educate whenever possible. Otherwise, someone reads about range extenders and going out 10 miles and thinks it's OK because no one wanted to call the OP out on it.
That being said, I only discuss US law because it is the only one I am intimately familiar with.