You're right, of course. Please feel free to revert the changesets.
I suppose it was a combination of being frustrated by the proposal process, getting carried away after watching a documentary about hilltop enclosures and thinking I know best. As you might be able to see, I haven't even made up my mind about whether to class them as fortifications or not.
I actually lay awake last night thinking that I maybe went too far, but then I got distracted with something else and forgot about it today.