There is no stopping a tank force that's determined by obstacle alone, countries in WW2 spent millions and lots of resources into complex anti tank setups and the lesson learned is nothing stops them. You just invest the least to be the most annoying and by that I mean time consuming.
At the very least you have to slow and turn your turret away from the place you want to go which is problematic if there's people on the other side who don't have to turn their guns away.
Yes you do physics exists and gun barrels aren't super into impacts or being filled with mud.
You're article supports me not you. It never says it is or isn't a anti tank ditch, it does imply it's anti vehicle though with tanks being a vehicle.
Ps your proof being a tank crossing a smaller equally sided trench backwards with the turret facing.... away from the berm is really terrible evidence that you wouldn't need to slow or turn the turret away.