I think Man U were a very organised, intelligent, group-press team - pretty much the opposite of a guts and thunder team.
Chelsea and Greece I'll give you, but even Chelsea had a lot of talent (they just chose to park it in front of the goal).
If what you're talking about is trying hard, then that's the minimum I'd expect of any professional footballer.
Both those Greece and Chelsea sides were supremely well organized and functioned as units.
I think a lot of "guts and thunder/passion/effort/whatevers" is ascribed based on results.
That Chelsea team needed extra time to progress past the first knockout round against Napoli. One (more) Cavani or Hamsik goal in either of those games (and they had chances iirc) and no one in their right mind would have branded that Chelsea team as a team with a lot of guts and thunder or passion.
Henry, Zidane, Pires or Trezueget somehow finding a way to score an opener against that Greek side in the quarter final and that Greek side wouldn't even be a footnote in football history and no one would be talking about them ever.
Similarly, if Gerrard directed that header anywhere but straight to Suarez, or one of the centre backs decided to track Suarez in the Uruguay game. Or someone on England's left side decided that allowing a free cross towards Balotelli was a bad idea or Cahill (was it?) tracked Balotelli properly and challenged him. Or some number of a host of other things had happened in one of those games surely some English journalist would be gushing about the passion, fighting spirit, chest beating guts and thunder displayed by the English players.
There's probably at least 10-15 teams somewhere in the "in with a shout if things go their way" category behind the real classy teams at any World Cup (and in the Champions League). Just by the laws of averages sometimes some of those teams will do exceptionally well. And like most teams they'll work really hard and be passionate. And people will look to them and think "if they can, why can't we?" whilst ignoring the base rate and the number of "in with a shout" teams that failed in that particular tournament.
My understanding is that unlike a lot of teams that are happy to be in with a shout and go on the occasional run most English people want England to step it up to where not qualifying from a tough group is seen as a shock and getting to the quarter finals is seen as the least they should do. To do this guts and thunder or passion is nowhere near enough. You need better players and frankly I think the whole passion (see Gerrard's recent comments) or managerial (see Hodgson debate) discussions are red herrings.