You do have a point but you try your utmost best to lose it with the tone you're using. Liverpool are in great form atm, they've played some very tough games and they've done pretty good. Your points tally would have been perfect, if it wasn't for that defeat at Burnley, and after playing Spurs-Arsenal-Chelsea away you were second in the shots p/g behind only City and you topped the shots from inside the box stats. Klopps's doing a fine job but he's also blessed with having some of his players, like Lallana, Henderson and Clyne, punching way above their weight at the start of the season.
You also have to take into consideration that United had much more to lose at Anfield last Monday. Already behind in the PL and with games away at Anfield and at the Bridge and with yet another Manchester derby looming on the horizon. We are still a work in progress, we are not in form and heavy defeats in those three games would severely damage the players' psychology and put Jose under enormous pressure. Two different worlds right now, don't you think?
Besides that, you are really making a big fuss over nothing. The "once mighty" United made a single tactical change which differentiated from our main plan and it was Fellaini instead of an attacking midfielder/second striker or play maker. It was made in order to prevent Liverpool from finding the extra man in between the lines with Firmino's movement, allow Herrera to stay close to Coutinho and prevent Mane from cutting inside.
But guess what, Klopp did a similar thing. He anticipated Pogba in a more advanced role with two holding players behind him and replaced one of his most in form players (and one of his most dangerous in the box) in the starting lineup, Lallana, with Can in order to allow Pogba very little space to run with the ball through the lines.
It's neither a mentality thing nor a WBA attitude, it's just that you are better going forward than us atm. Much better... thus nullifying our best creative options, Zlatan and Pogba in this game, leaves us with far less options and makes us look much worse on the pitch. All these things explain why we are not happy but content with a point at Anfield under these particular circumstances. After all, the full quote was: "they are not the last wonder of the world but they are a very good team".