Cognitive dissonance
Dude, for someone who is well aware of these psychological effects, you sure are prone to them.
You said loudly and repeatedly that Wenger was so inept that anyone would do better. Every time I told you that you were being ridiculous you doubled down.
And now you're completely changing that to "well of course no-one can do better because of the damage Wenger did, it doesn't matter who our manager is".
As I've said, Wenger doesn't get off scott free for the mess we are seeing right now, but the fact is the squad he left us with finished 5th last season on 70 points and got to the Europa League final. It was a solid enough base to work on and I don't believe for one minute that we'd be this bad this season under Wenger (which doesn't mean I want him back). So Wenger isn't solely to blame either.
I wouldn't say Wenger was a one trick pony but his ideas, once revolutionary, were soon copied and other clubs started doing things better.
The billionaires bowling in was a factor too. Looking back he always had certain tactical weaknesses, but when your squad is better and fitter than the rest you can cope with that. When they're not those failings become all too evident. That said, he did well keeping us in the top 4 when we didn't have much money to spend and I'm pleased he won the FA Cups, he deserved something to mark the latter part of his time with us and I wish he'd gone after the last one rather than staying that extra season. Some people were acting like Wenger was THE problem and as soon as he left all would be well, I never bought that although I did think a different manager would improve things and am baffled by just how bloody awful we are this season, we were never this bad under Wenger and we were much better than this last season.