No, people don't underestimate the impact the rule change had because it's only a selection of bitter Manchester United fans who actually believe that bollocks & use it to play down our achievements. Just in the same way they hate to accept our achievements in Europe at the same time & put it down to everyone else being crap, or the competition format. We were renown for building our play from the back. This involved patient, probing, play, but most importantly, it involved possession. Whereas most sides would have their keeper punt the ball downfield from a pass-back, our keeper would use it to change the angle of play. So if someone like Phil Neal found few options on the right side of the field, he'd knock it back to the keeper who would immediately throw it out to the left-back & the build-up play would start from that side. Hardly revolutionary in today's game, but Liverpool were revolutionary back then, hence the reason we won so much. & as much as it may shock you, Liverpool's goals per game ratio during our dominant period wasn't much different to your wonderful, free-flowing, saviours of football, Manchester United during the Fergie years.