I find FYs comments bizarre. Troubling, actually. He seems to feel about Wenger how I feel about Mourinho - and I do recognise that my almost visceral dislike of him is unhealthy.
The 'last decade' argument is lazy and simplistic, it doesn't take into account how our (literal) fortunes have changed in the last few years. And yes, the (relative) lack of money prior to that doesn't absolve Wenger of blame but it does mitigate it somewhat. The last few years the money has been there to compete with anyone so we should judge him by different standards.
The first year we won the FA Cup. No serious title challenge but it finally got that monkey off our back and gave us hope of greater things to come. The start of last season was a car crash, we were out of the title race before the first bend. Wenger should probably have been sacked for that but we did at least get it together, easily finish top 3 and retained the FA Cup. And some of the wins in big games or against teams we traditionally struggle again did give some cause for hope.
FY has accused me of getting too excited by 'a few wins', but it wasn't just a few wins. We were calendar year champions in 2015. I'm not claiming that as a trophy

but it does demonstrate a long run of form good enough to seriously challenge for a title. IMO there was an argument to give Wenger once last chance at the title and it's been a car crash. So yes, he should go. But the worst you can say about him is he's lost it and is no longer able to compete at the top level. But there's no doubt in my mind that he has always done what he thinks is best for the club, both short and long term.
I can understand fans' anger and frustration at seeing yet another failure. I share some of that. I will never understand the level of hatred and vitriol aimed at Wenger though. Clough (who was, if anything, more arrogant than Wenger) lost it to the point where he ended up taking Forest down and I don't think he ever got this level of abuse. At worst Wenger has presided over us slipping from the best team to the 3rd or 4th best. Is that good enough, given expectation levels (which, remember, he has set - we never had these expectations from the club before Wenger)? No, it isn't. Does it deserve this level of abuse? I don't think so.
And yes, Wenger and Arsenal's fortunes are entirely entwined. Enjoying one implies enjoying both which demonstrates an unhealthy level of dislike for someone. It's a bit like enjoying watching your wife being raped because you dislike the person doing it so much and know it means you can see them put in prison. Bizarre.