It seems as though all Lewis had to do, is question the pitwall on the radio, and with some that becomes a rant.
Over here in the states, Lewis communicated to the pitwall during the 2010 Australian GP that his tires were going off, and believe me if Lewis went into any rant while communicating to his team, it wouldn't have taken a minute for SPEED's commentator Steve Matchett to inform his audience regarding Lewis's actions.
Still, let's use this one example to beat Hamilton with and ignore all the other instances.
The driver in front has the call at Mclaren. If Jenson Button just went in,he wasn't giving Lewis the opportunity to pit first. Pitting first can allow you to jump other cars, the undercut.
...As you say, he was behind Hamilton so it could not have interfered with him.
Exactly my thoughts when LH was behind JB in another race & wanted to come in for tyres...but JB didn't want to come in until the next lap, so LH had to stay out for two more laps & lost a place to FMassa.
This is one of the reasons that IMO JB is selfish.
And of course when JB has track position......his mate Coulthard is going into verbal overdrive on the Beeb...saying hamilton does not have tp etc. He conveniently doesn't notice when LH is not being given the same