Webb has said he’s looking at releasing some audio after certain games, as he did when he was in charge in America. It won’t be live though, for now at least. You’d have to ask him or draw your own conclusions why that is. I could guess but what would be the point of that?
I’m not aware that United and Liverpool have substantially different set ups. The only previous case I’ve heard about in England with a similar problem as the other night was in the Arsenal V Liverpool game at The Emirates. Again I can only guess but I assume there is a minimum number of suitable camera areas that are required, which every club adhere to but most clubs have more than the minimum.