An interview with Dein is not definitive proof, he is advocating for Wenger so of course he's going to go on about how driven he is whether that's the case now or not.

I've also stated this malaise is also subconscious I don't believe Wenger is wilfully lacking intensity, but when he sees men over twenty years younger than him who are the trailblazers that he once was at the top of European football, a fixed belief that money dominates the sport and a job security that is unfitting for someone who has not won a top trophy for over a decade and then you see press conferences where he seems more resigned than angry and it really is not controversial to suggest that he's not as driven as he was between 2001 and 2005.

Does he still get frustrated when he doesn't win, would he love to win Arsenal another league title before he goes? I'm in no doubt that he does. But I honestly think the idea of leaving Arsenal without winning another league title is disappointing it wouldn't be devestating to him.