No, not quite. The booing was out of line, but you seem to be upset that a British crowd weren't fully behind him. My point is that in an individual sport like Tennis there's no real incentive to support a player just because of their nationality.
And there's no need to heckle, boo or jeer a player because they aren't your favourite. There's a very big gap between being "fully behind" a player, and what happened to Andy. Since when does a player need to be your absolute favourite for them to deserve basic respect?
The excuse that not everyone has to be an Andy fan, even if they are British, is missing the point entirely, and it's mind boggling if anyone actually believes it's an acceptable explanation for last night's behaviour.
On reflection, I'm sure that the main aggravating factor for the bad behaviour was the hope of revenge for Andy denying Roger his gold medal. Clearly they weren't all British, but reports suggest some British Roger fans got swept up in the moment, and it's up to them to justify it to themselves and for people like that, any old excuse will do. In reality, the people who think or act that way have never achieved anything significant in their lives, and just as likely, have never actually tried, because they lack the guts or imagination.
One possible irony is that this episode has drawn attention to how badly behaved Federer fans can be, and made a lot of the tennis writers indignant. They've long been banging on about how Andy has been misunderstood, and this has given them the opportunity to repeat themselves.
Thankfully, for all that there are still some who believed the early tabloid mis-reporting of Andy, I've seen hardly any negative reporting of Andy himself from the British press for some time. A lot of UK newspapers appear to have an editorial policy of not having a go at our Olympic medalists (hence universal love of Wiggins and Hoy), and long may it continue for Andy.