Yes Ole's tactics was an actual thing and we were also coherent. The sad thing is most of you have no idea how management works, where you naively think that all he does is tell the players to "have fun and do whatever you want". Just by observing the sheer number of comebacks during his tenure, it is very clear that he is not someone you want to mess with if you are not playing well and that the players were able to pull off his instructions. Like ETH, he puts on a different face during the interviews. Tactically he was quite versatile by utilizing different formations depending on the opponent (e.g. 3-5-2 vs PSG and Man City, 4-4-2 diamond vs Chelsea etc). The only problem with Ole was that he had tendency to trust players who had delivered for him (Shaw and Maguire performed well during the 20/21 season) and that ultimately caused his downfall.
Coming back to ETH, he certainly studied our play in the past 2 matches as well as Liverpool's playing style very well. Unlike others who think that he dropped the players because he wanted to prove a message, I feel that he made changes that suited our approach against Liverpool. Maguire does not have the composure nor the decision making to defend against Liverpool's pressing, which is why he brought Varane in. Similarly he did the same for Shaw by bringing in Malacia. As for the midfield, I would say that he brought in McTominay because Fred was not performing well in the DM role 2 games in a row and he wanted McTominay to show that drive. Ronaldo was left out because he is still not able to press very well and Rashford's way of playing was conflicting with Ronaldo, resulting in Rashford moving to the center and Elanga providing the width and aggression in Rashford's old role.
The team looked much more compact and more confident on the ball as a result. You can see that the energy and drive was strong and even Liverpool's goal did not make them feel doubtful at any point of time. Kudos to ETH because he knows how to adapt to different opponents and is very smart and confident on the way he works.