With ENGLAND yes, that's the point. It doesn't matter who the manager is, its the same old story. So maybe it isn't the managers fault?
In that sense yes. Capello, when signed, was one of the most highly regarded coach in the game.
It all went downwards when he signed with England though
It think it's a combination of several problems :
1/ Most of your NT coaches were absolutely awful. Before, during and after their NT stints.
2/ Many english players are awfully overrated because of national (and international as well) media.
3/ Directly after #2, some are extremely arrogant on the field and see themselves much better than they really are. They quite clearly disrespected Iceland yesterday and didn't expect to have any trouble.
4/ Lack of tactical awareness has always been obvious in english football.
5/ Lack of english players in the league. And when they're even half good, they get crazy money (see Sterling, Raheem, who was touted HERE IN HFBOARDS by multiple posters who are RIGHT NOW MOCKING England's overrated squad, as the best young player in the game). Goes to their head, and they don't work hard enough.
6/ Pressured players because of insane expectations.
This english squad has talent IMO. Kane, Sturridge, Alli, Sterling, Rashford, Lallana, Dier, Clyne, etc... those are decent players. But they're not world class players yet, maybe won't ever be.
Yet how many times can you read it here, where many posters are here saying it's not surprise England sucks, but at the same time, hype those players as world class players every weekend?
That's not how it works.