This.
Whilst I don't think it's fair to squarely shoulder all of the blame on Wenger what is clear is that he makes all of the Technical decisions .
The team is in desperate need of a Experienced CB or CM, they can be bought for 15million, Wenger choose to spend the best part of 15million on a 17 year old a few weeks back.
Sure there are other factors to signing young potential, low wages being one benefit, but at some point especially if high earners are leaving the club, you need to make a decision to bring in a experienced high earner from time to time. Our strategy is very much sell high, buy low...basically, maximise your income, minimise your outgoings.
There is only so long you can get away with this strategy and Wenger is now finding out that us supporters won't put up with paying the highest prices in Football to watch a glorified youth team built on "flawed ideologies".