You're right to talk about fans being priced out but I think that's a phenomenon of the Premier League. Season ticket holders are now either diehards with no other interests putting all they gave into their club or are middle class who can afford it. Yes, prices are more expensive at Arsenal and Chelsea in particular but as long as there are people willing to pay it and moreover long waiting lists, then the price will stay high. (I just love the smell of free market economics in the morning!)
As for hating Wenger, I do think that's unfair given what he's contributed to English football. OK, he criticised the financial muscle of the arrivistes like City under Mansour and Chelsea under Abramovich but however misguided or otherwise you see that, surely you can understand the frustration he had that he could no longer reasonably compete for the title, made worse by financial restrictions due to building the new stadium?
I'm no apologist for the Arsenal fan base. Every club has its fair share of arseholes.
I grew up in North London and Highbury (which is nice full of Victorian houses of character) and Canonbury were always nice and expensive unlike other parts of Islington like Finsbury Park and Holloway which were not back then.
Off course now all those areas are close to unaffordable.