Hello Stewart. I have made a video on why you are wrong.
thin slivers of rock that block your path, and getting stuck on a single pixel blocking you path
This is a game called Space Engineers. You are able to dig freeform terrain with hand drills and larger drills attached to ships. As you can see, digging out that rock does not, in fact, result in a thin sliver of rock to get stuck on. I'm sure an experienced developer like you knows it's quite possible to have these systems in place and have them work for the player.
However, knowing that you are an experienced developer, I understand that you must know what you are doing and will trust you to make the correct decisions.