I think Mr Djokovic is getting a raw deal in the media and social nedia.
It appears he has an aversion to being vaccinated, and so has applied for, and as far as he and is team are concerned, been granted, an immunity which will allow him to enter Australia and play tennis.
It now appears that the regulations have not been met, and Mr Djokovic is being held temporarily, prior to possible return to his point of departure - he is not being 'deported' because he hasn't officially entered the country.
This has now been twisted into the idea that a millionaire sportsman thinks he can flout the rules, has been stopped, and is being kicked out, ha ha ha hee hee hee, good riddance etc.
But objectively, and leaving out all the righteous hot-air, he has actually not broken any laws, or done anything except attempt to facilitate the chance to ply his trade.
Now people can take issue with his approach to vaccination - but if regulations allow him to enter the country and play, why would he not do both?
And if he is prevented from doing so, then he returns and will play elsewhere.
But the notion that he is simply using his money and fame to try and slide around the laws that apply to everyone else is clearly not the case, and, most importantly, he has not actually tried to do so.
He has used what are advised regulations to travel and enter the country.
If, as appears the case, the regulations are not as he and his team were told, then he cannot enter Australia, but that does not translate as some sort of chicanery based on his worth to the country as a major sports star.
And none of the problems are down to him personally, but the subject of disputes between his management and the Australian authorities.
So I would argue the OP - he is not being 'deported', and it should not be 'good riddance'.