Yes, I have never understood the "common sense" of wild camping being illegal.
here we get into the "in a perfect world vs reality" thing, wild camping included.
I'm sure most of us here are respectful, mature people, who when we need to , or choose to, wild camp, we leave no trace and no one knows we have done it.
The reality is that is a densely populated area, the last thing anyone wants to see is garbage and human kaka and toilet paper left strewn around, which unfortunately, people do.
there are a lot of clueless, don't give a rats arse about this sort of thing people in the world, heck I even see it regularly with toilet paper scattered around areas that are an obvious good pee place.