That beach is a very big place - not an indoor concert arena or sports stadium.
I was in Launceston last week - it had well over 500 people in and around Brisbane Mall.
Cataract Gorge had a few hundred people walking around it.
I didn't notice anyone closing down either of them, or suggesting they be closed.
I watched Andrew Bolt tonight who was also hyperventilating about the people on Bondi Beach - only his prpgram had an aerial video shot of the beach on Friday, and once again one could easily see that the people were far from crammed like sardines, and there was plenty of space between them.
Bolt also asked an expert about people going on trains - something far worse than being on Bondi - the expert essentially shrugged, saying that with the sackings less people would be going into work, and maybe trains should operate at peak capacity all day long to reduce the persons in the carriages.
Regards,
Renato