Sounds to me like a dedicated band of activists bigging up the complaint-count.
I live in E Anglia on what is evidently a training route and every
year we get maybe four or five Hercs and the same number of Chinooks come by on the same track at very low level, if even that.
Fast jets? Two ot three a year maybe, all RAF.
afaik the yanks don't do low flying though occasionally they make plenty of noise mid-level manoeuvering.
Apaches are sometimes seen bumbling about but don't have the startle factor of a fast jet or to some extent a Herc.
Compare that to fifteen years ago when 2FF2Rs right overhead were a three times a week occurrence. In my youth it was often several daily, often a stream of them in quick succesion.
There isn't a low flying nuisance around here, that's for sure.