I think he summarised well regarding Wenger and Arsenal. If he was delivering the results at Liverpool or Utd instead of Klopp/Jose then people would say that he's doing a great job.
I think that it's time for a change now, not that I disappointed with results (realistically we shouldn't consistently finishing above Utd, City and Chelsea). But just that it's a bit boring. We know what to expect every week. We know that we'll finish 2nd - 4th etc etc.
I've only ever known Wenger as Arsenal manager and so it'll be sad to see him go. But a fresh approach is required now. Sure, it may well mean that we drop out of the top 4. But at least it'll be something different.