A wall is a different beast.Its not the same at all. You wouldn't order a free kick to be retaken if the wall was 15 centimetres closer than the minimum 10 yards required. You would order a retake if the wall broke forward by a few yards and blocked a free kick. It's the same concept and why retakes are only ordered when keepers gain a significant advantage by moving forward and narrowing the angle. It's also the linos call, not VAR.
This is a penalty with a permanent line and a definitive rule in place. How can you judge the degree of advantage? Where is the threshold?
Are you sure VAR can’t review? This would be the easiest decision VAR would make. If they can review encroachment in the penalty areas, then I would think the goal line would also be included.
I have no doubt VAR will overrule a similar incident in the coming season, which would beg the question why this one wasn’t looked at.