Here are three more pictures from a different perspective... now you can tear me apart again!
Take a look at the L-bricks at one neighbor in the background, that's more than 1m L-brick.
Doesn't look like the neighbor has dug in, does it?
Now I have a question. I've seen this quite often.... Can you build on a loosened pile of earth? I always thought you can't compact that! That's why they always pile up and compact gravel from street level.
You can't just put 25cm of gravel on it now, compact it, and be done. That pile has only been there for about half a year, at least it feels like that. Or am I mistaken?