I agree with Roberto that it's not black & white. Personally, I don't mind Murray's chirping. It's at his own box, or at himself, and he's otherwise a very good role model. As to general purposes, I don't mind the odd outburst if it's not habitual, out of the ordinary, or directed at others, which includes the crowd and the chair umpire. As to Alcaraz, he's generally a well-behaved player and a gentlemanly presence on court. He did break a racquet today. I will forgive him, as long as he doesn't make a habit of it.