I disagree. Not hiring a black coach is racism and should not be allowed. A coach should be hired because he is qualified for the job, not because of the color of his skin. How could you even suggest that it's okay? But with vaccines it affects others as they reduce transmission that could even kill someone. It also affects hospitals as unvaccinated people have much more chance ending up with complications taking the place of other people or even making hospitals lose control! So during pandemic governments have no choice but to make rules, it's an exceptional situation because of a very contagious and deadly new virus. If they don't make rules than everyone would do what they please and things would be out of control with medical systems all over the world collapsing one after the other.
As for having the choice or not, even before Covid some countries (for example many countries in Africa) would not allow visitors to come if they don't have specific vaccines. Other countries made some vaccines mandatory for their own populations (usually taken at a very young age). So, it's not a "new" thing that vaccines are mandatory but all of a sudden now some people complain when the whole planet is trying to come together and not lose control of the pandemic.
As for the Djokovic incident it's clear that Tennis Australia tried to sneak their players with the help of their Victorian Government connections giving them exemptions and it worked at the borders for a couple of players. But when Djokovic stupidly tweeted about his exemption the federal government realized what was happening and put a stop to it. The federal government had instructed Tennis Australia months prior that only vaccinated players are allowed. Many players got vaccinated for that but clearly Tennis Australia tried to sneak some players in and it ended up backfiring when Djokovic announced it because he is not bright. If I remember correctly Djokovic couldn't play the ATP Cup which was in another state so clearly the Victorian Government tried their tricks.
Also, the whole Djokovic behavior is fishy because the timing of his Covid infection was too convenient. Up until the 15th December he had zero plans to play the AO? And then all of a sudden just like that he conveniently gives us a PCR test that gave him an argument or chance to enter. Sorry but I don't believe it, it's too convenient and it was probably fake. But even if it isn't a fake PCR test, he clearly still didn't care because he got caught as while being supposedly positive, he still went out in public. He admitted only to the French interview and photoshoot, but he probably also knew the day of the event with kids but just didn't admit it because it would look much worse with no mask and no social distancing. He is irresponsible either way you look at it and has zero respect for science as he'd rather believe in magical water from Energy pyramids.
He deserved to be kicked out.