Totally agree, and Liverpool under Bill Shankly and others were well capable of winning when playing badly. I'm not comparing us to Liverpool in the 1960s and '70s, but they could play much better football as well, and so can we.
Were we negative when we beat Man Utd? No It's obvious from his comments that CH knows we are not playing as well as we can. He will be pleased with the results - three wins in a row - but not pleased with how we played except for the way we defended. He's said as much.