Yep, 100% correct.
You do get your regulars who STILL try to get material processed by using several different shops and different names.
I suppose now everything is going digital and being able to print your own at home... these sorts of things will not be intercepted.
As for disturbing enlargements, we would regularly get in a few naturalists on various holiday and resort shots.
I used to laugh at the students that worked in the engineering dept. As they had to constantly tend to the machinery, when ever a set of nudes came out of the processor, you'd often hear a loud cheer & woolf whistles, if it was male nudes, you'd here a loud boo-ing. Nutters the lot of them.