The iPad Air 2 seems to have got an extra lifeline with how well it performs on iPadOS15. However the batterylife is what it is due to its age.I have an Air2, I only use it for reading websites, the twitter app, reading comics/books, and occasionally streaming video. aside from not having a great battery the air2 still works really well and it has a nice screen. is it worth me looking at the new iPad?
The larger display and the increase in performance makes it a solid upgrade IMO. While the laminated display of the Air 2 is nice to have and the tap-feel is a bit more plastic - neither of those detracts from the pure value-for-money of the iPad 9th gen. Just don’t expect to get 7 years out of it (like with the air 2) due to its limiting 3gb of Ram - although enough for now, it might not be for future iOS updates based on the increasing Ram on all higher end models.