Can we agree that trophies aren't necessarily the hallmark of success?
The reason I say that is because Arteta has already won an FA cup (which seems to have been forgotten/discounted) in a season where I think most would agree we took a step backwards. Similarly, Wenger's last FA cup was in a season where we dropped out of the top four for the first time in his tenure with us. Now I love winning trophies but those wins didn't diminish from the fact we were on a downward trajectory at that point.
To that end, when we talk about trophies as a marker of progress, it feels to me like an inaccurate barometer of performance by itself (let's not forget Wigan winning the FA cup in a season they got relegated). Hence, why I think the season as a whole needs to be taken into account (ie. performance in the league, Europe etc.).