Agree with this.
As the move develops, United's back 4 are perfectly positioned. You've got around 8 yards between each defender and those nearest to the ball with a proactive body position.
Then Elanga falls asleep which causes a problem. Pogba should drop in to help, but he rarely reads danger well so he lets the situation unfold. And central to all of these issues is the lack of leadership and communication. This isn't Maguire's fault as he's on the blind side and doesn't know what's going on around him. But Lindelof, De Gea and Telles should be pulling in midfielders to help out. Lindelof should haul Pogba back into the defensive line as the deepest player who can cover. Telles the same. But defensively it's a shitshow from the midfield on 3 counts, (1) Elanga not tracking his man, (2) Pogba ball-watching, (3) Lingard letting his full-back deal with a 2v1. At no stage does Pogba scan the defensive line to see if there are any issues. Lingard looks once at the start of the move when he sees Telles and Lindelof playing man-to-man, then doesn't look again until Pukki is surging into the box. Really poor.