We have really started to gravitate towards CGs with electric hookups because of this very issue. Even though we are perfectly happy dry camping, we are doing it less and less because it seems that we frequently end up near someone who runs a construction type genny for 4+ hours/day.
On a recent trip we had a guy in the next site with a Honda Eu and we barely even noticed it running. But the guy 5 sites away with the construction genny almost made us give up and leave! Completely ruined the experience... It was so funny too, we were 5 sites away and it was driving us crazy. The people with the gen were sitting at the picnic table having breakfast with that thing about 5 ft away! What part of that could possibly have been in any way enjoyable???
In my personal opinion, that type of gen should only be used for short periods, maybe to use the microwave, brew coffee or for a hairdryer. To run for a couple hours for battery charging, gotta have a quiet inverter gen. 
So, yes, I totally share your frustration!