It came at the cost of generating xG 0.05. You may find this annoying, but it is the truth. Domination should amount to something, otherwise it's not really domination.
I won't argue against your glass half-full version of the match. Again, in the first 20 minutes of the second half, when Arsenal moved up a gear, they enjoyed more than 60% possession, they had decent rhythm in their game, and they looked like scoring (which we, at no point, did). That's the glass half-empty version. You are allowed to have that, too.
I don't understand what the fuss is about and why the new guy needs "protection" on here. I am not judging him. #10s able to receive the ball in the half-turn, creators on the wings, centre-halves that can defend the wide areas and midfielders able to carry the ball through the lines are the abc of modern tactics. It's a cultural shock to arrive at one of the biggest clubs in the world and find so few options to implement a modern approach.