Not his problem, his main goal is to win this tournament, and I fully understand him doing everything he possibly can to make that happen. Including saving as much energy as he can, since he's going to need it later.
And in the end if he wins it, that would make you far happier as a fan.
I am not really a fan of Murray. He is a good player but not my style. As a neutral watching, I am not really impressed.
They want ratings for the finals but these matches are being played before audiences, too. If Murray played his best, more people would watch. A lot of people will have turned off.
What kind of attitude is 'not my problem I want to win'? What does Andy want to win? A trophy, yes. And a lot of money to pay that huge entourage. And where does that money come from?