Liverpool fan here. My condolences.
I agree 100% - Kroenke has to go. I think he has profit > Arsenal's best interests, and if they want to continue competing in the top 6 they need the money to do so in the transfer market. City, United, and Chelsea will always have their war chests, Tottenham is no joke anymore, and at Anfield Michael Edwards continues to commit daylight robbery.
Obviously the squad needs some work, but I think sorting out your long term manager is more important. I think Arteta might make a fine coach someday, but it's his first job and taking on the likes of Guardiola, Klopp, Mourinho, Ancelotti, etc. is a big ask, especially for a club of Arsenal's status.