Even if United drew against Istanbul, that point wouldn't have been enough. They needed a point off PSG or RBL. The group saw zero draws, which was odd. Even if United beat Istanbul twice, three teams would have been on 12 points and then it would have gone to tiebreaker.
Anywho, you also have mentioned context re: Poch and you nor anyone else has mentioned Levy. He is has be front and center of Spurs becoming a better and more stable club before, during, and after their transition from WHL to Spurs Stadium.
Ole might not be good enough to bring trophies to United such as the league or European trophy. But he'll leave the club in a better situation with better players than he found it. It's then up to the club to make the hire after him and win. Gradual and smart steps are being taken.