Who said that any breached the guidelines? Not me.
All the guidelines say is "By submitting a cache listing, you assure us that you have adequate permission to hide your cache in the selected location. However, if we see a cache description that mentions ignoring "No Trespassing" signs (or any other obvious issues), your listing may be immediately archived. We also assume that your cache placement complies with all applicable laws. If an obvious legal issue is present, or is brought to our attention, your listing may be immediately archived."
I'm questioning whether "you assure us" is good enough, questioning the guidelines themselves. I feel than permission should be proved, just like you do with Woodland Trust.
As a reviewer, I would have thought you'd have a view on this topic. How many caches do YOU think have landowner permission then?
I've offered some realistic advice to a newbie, but wondered afterwards if my view was wrong, so decided to seek alternative views on this topic.