Arsenal can't always depend on him, he was not as good as Salah. Arsenal wasn't perform in this season, they're just lucky enough to reach top standings. But in the long run and consistency, Arsenal doesn't have it.
Even before this game he has flopped hugely. Asides that, the entire squad looks fatigued, stressed and tired. I think Mikel Arteta us making the same mistake from last season this season. They'll need to sign players, they need support, infact he makes useif the same set of players from last season with the same pattern.
The pattern works for him but it's now predictable and everyone knows how he starts. They should sign up new players when the new season begins.
Dusan Vlahovic not good enough for the wing. I don't even know how they compare Saka with Mo Salah. They're not lucky, Arsenal have earned them position to wherever they're currently.
It's no wonder that Arsenal will miss that opportunity and go back to having the same season as before. Mikel Arteta must add players, especially in his attack line, because as you said, it is no different from last season's player options. Well, let's see if in January they will be aware or still confident about the current squad.