I think I detest JJ's grunting almost as much as Azarenka's and Sharapova's. It does seem extreme for a man. I cannot remember this dreadful noise at Paris last year. Perhaps he thinks it is distracting. I thought Berloq's was bad enough and. of course, Andy complained about his but still won the match. I cannot imagine what it would sound like under the roof.
Also I see Delpo had a fall and is having to see a doctor re : his knee and ankle. Didn't he damage his knee last year? I hope he is not going to be another withdrawal.
JJ does not always grunt. Only on some occasions. But he is not the only male player to grunt, only Fed does not grunt. If you are a power player, grunting is expected.
I am a fan but he needs to tone his grunt down completely.