Meatwad flobaba Trophies are not created equally. Spurs won a competition that we were too good and successful to be eligible for. Who cares?
There is enormous value in climbing up the domestic and European football hierarchies, and elite positions are won through performance in the league and CL. Jose Mourinho called that football heritage, and it can absolutely be a target for the club, because it not only defines your status in the game but sets you up for future success. Getting to the semis, and winning a big tie along the way, gives us confidence we can actually win it next year.
And yes, winning big trophies is the ultimate prize in football, and Arteta needs to win them to reach a certain level of success, but when the history of the game is written and discussed, we remember more than just that – there's rivalries, styles, big games, big moments. People are going to remember that QF win, with those famous Rice free kicks, and the loudest ever crowd at the Emirates, longer than they will our 2017/2020 FA Cup wins. What lives on more, the Keown-attacks-van-Nistelrooy game and the amazing intensity of that rivalry, or our 2005 FA Cup win?
Why are we a bigger club than Chelsea, despite them winning a lot more trophies in the last 20 years? Because of the style of the Wenger years and the culture of the club.