Entertainment? If you're not enjoying watching because we don't play Peps well oiled version of the game then I get it, but that isn't what most people are debating here. Most seemingly believe that football should only be played like a robust oil engine or a computer program which during training installs considered variables and then we watch managers may programmers come together and see which version was better.
If I want to watch a computer simulator run with a project lead, personally I would watch something else, an esport perhaps like DOTA that does exactly what is being asked for. To me, I watch football because of the human element and complexity added via memorable players who make things happen even. Ferguson's United struggled for a time with teams that sat back, when we learned to break those down (whilst not micro managing every decision), our team looked amazing. I'm happy to watch new players work out how to do the same as that in my opinion will lead to long term success. It's those same lessons that were never passed from Ferguson's last team to our current players and in my opinion, is where much of the United way, is really evident.