Annoyed at some people having a dig at Andy just because he was complaining about Berlocq's grunting. I mean you could hear his grunting from China it was that loud. It was ridiculous.
There is immense irony that some people like to whine, sit in judgement and cast aspersions about another person making a legitimate complaint. Berlocq's really very annoying and intrusive grunting was probably gamesmanship, and if not, it was disruptive, and everyone else gets to complain if something interferes with our ability to do our jobs properly.
It has obviously riled Andy for a bit, and perhaps most days he'd have let it slip, but the complaint about his time-keeping came across as petty, and probably also gamesmanship, so why not react? I know there is a case for letting these things slide, but sometimes it's better to say something back. It seems to have taken a lot of people by surprise.
For some, it's an excuse to have a go at Andy, but for others, it's given them the excuse to say just how annoying they think grunting is too, and about time someone said something about it in the men's game.
Interestingly, Federer was asked about grunting after his match, and he admitted he found it annoying too if it's too loud, and especially not even. Basically, agreeing with Andy's concerns. You can be sure that some people who called Andy a whiner will be praising Fed for his wise words. Not that I blame Fed for that, and it's good that he is backing up what Andy said - even if the hard of thinking won't notice.