Honestly, during the entire series I have only seen a guy who just wants to do his job, increasingly desperate because everything gradually turns into a kind of race in the mud. Not only can I imagine what it means, I know perfectly what it is. With the aggravating circumstance that Gabriel would probably have Metatron chasing him day and night with “how is everything going, oh Gabriel Strength of God? Please, send me a report when you can."
So we come to The End of Times with a betrayed archangel, frustrated to inconceivable limits, with a superior who is quite possibly asking for his head and let's see what else... ah, yes, a million angels to whom he has to explain that what they have been for prepared will not be possible.
And all because his agent on Earth wants to eat sushi.
What would you do if that happened to you and you could have the culprit in front of you? And by the way, what do you do with traitors and deserters in times of war? As I understand it, they are not given flowers and hugs. And let's remember that Lucifer escaped them and we already know what the result was. I think Gabriel was really interested that, this time, the same thing wouldn't happen again.