‘In all scenarios’ you ask, and I think it’s easy to say no, definitely not in all scenarios. If you get in ahead of the defender with the front to the ball, shielding the ball, you will almost never get a PK against. If you do the same thing with your back to the ball, a PK will be given most time. If you get a hip or a shoulder in the way of the attacker without reaching the ball, probably it will be nothing. If you slide tackle in front of the attacker without getting the ball, 9 out of 10 it will be. Or 8. It’s certainly not fool proof, but it’s not one of those issues that constantly divide experts, unlike issues like handball, holding/tugging or when to use VAR. Wan Bissaka obstructed Elliot in a way that I’d be surprised hugely if it wasn’t awarded at PK or FK, unlike what happened with Dalot and Antony last game.