I think you're both probably right. In the bigger picture it becomes a question of whether Arteta can actually handle Premiership and Champions League simultaneously next season.
Saka starts 95% of all our matches, sure, but is it really because he's all important or because Tet doesn't know how to rotate?
As for Smith Rowe, we really ought to be playing him for a transfer at an absolute minimum. He has brilliant talent and scores late run goals from a different school to our other forwards.