Well. I kinda agree progress has been slow given the level of investment. I think we'd have finished top 4 last year had Auba not flounced out. I don't think you can entirely blame Arteta for that.
They're a young squad, they should in theory get better. They seem to be buying in to "the process". I'm content to give them this season. If we don't progress then fine, #ArtetaOut. But changing a manager can set you back too so we'd need to be careful about who we get in.