probably not.
No, I certainly don't think he'd get vaccinated. One thing he might change is just not flying out to Australia if he knew what a debacle that would turn out to be.
I think for Djokovic the vaccination question isn't an isolated issue, it's tied in with his whole health thing. I remember when he was younger he was a good player, but a bit flaky and not quite as good as the very best. Then he completely overhauled his diet and physical regime, removing gluten etc., and it really transformed him and turned him into the superman we've seen over the last decade. I'm sure he sees vaccination as going against that, introducing pollutants into his carefully-maintained body, etc. I wouldn't be surprised if he thinks that having the vaccine would weaken his game. Chances of him getting vaccinated, even to compete in the US Open, have to be close to zero.
I think that is understandable. An athlete should be very cautious about what he inserts into his body. And he has done a very good job maintaining his body.
So, it is understandable to me if he does not want to get vaccinated. I also think that it should not be forced upon someone.
A person will get vaccinated if he wants to and if he doesn't it's his choice. Imagine that he gets vaccinated and it causes some problems in his game, who will take that liability??