First season was not Arteta's full season, nor did he get make any signings. And won the FA cup, since you're rating it so highly.
Second season he finished 8th, then 5th, then 2nd and then improved the points this season. All the while winning the FA cup. It was this very forum which used to snide at the Carling Cup and now its a serious trophy
While a cup win is great but long term means nothing, I was there when we blitzed a few FA cups under Wenger 10 years ago and meant feck all, the club went backward and almost ended up midtable.
Nothing in your post is 'fact'. You've gone reverse in your league position as time have went on under ETH than we did with Arteta. The 'youth' player thing, after spending half a billion (none of them on youth players) if that's the positivity then go for it!
Saying that I was supporting United today, feck City and their cheating. Absolutely delighted they got shafted. Hopefully Pep fecks off next season and City get done for every year they have cheated.