Honestly I believe that Arsenal can go far if they have an attacker, that's what's many of us believe, they will be complete on like last season when they operate without a striker especially when they had to deal with Kai Havertz out for a long time. At this point the Gunners are now aware of how to go about next season's busy schedule and they need every player to be ready and having a replacement is needed. I agree with you, the seriousness of a team tells with the kind of materials they come with, because you can't use teenagers to battle for something that has to do with legends so Arteta better start going for quality players and also spend that money to show how ready they are, some players need to leave Arsenal currently.
And Arsenal really has to start making good use of the transfer market. No need to make many player transfers. But you only need 3 or 4 which are of very good quality. And currently Arsenal has made several good moves, such as Arsenal getting Kepa, Arsenal also making a verbal agreement with Martin Zubimendi, and Arsenal also negotiating to get Christian Nørgaard. And apart from that, Arsenal is also still looking for a sharp striker.
The ones available are not sharp enough for Arsenal to make their move early and sign a striker? The complaints of Arsenal fans last season was that they don't have a striker, that it was lack of striker that cost them the league. So I expected Arsenal to be very proactive when it comes to signing a strike this summer. The striker position should have been their top priority. But so far we haven't seen anything. Let them continue to look for sharp striker until other clubs sign the available ones in the market. And they will end up making a panic buy and get rubbish in the end.