I have no idea. There's no telling whether or not the political will to keep unvaccinated people out of the country will still be there a year from now. We'll know more once they call the upcoming election, and see how the campaign develops. We'll know even more after the election resolves.
I just find the whole idea ridiculous from any country, tbh.
If the vaccines were proven to definitively prevent infection, then the argument would stand up. But we know they don't. They are clearly amazingly effective in other ways but they do not prevent infection. I know this from personal experience and I'm sure loads of others are in the same boat. I've been infected with covid after one dose, and infected with covid after two doses. I'm thankful I had the vaccines because who knows I might have been worse than I ended up being.
But as they don't stop infection, treating unvaccinated people like they're rabid animals is pretty out of order. Especially given that if you're vaccinated even though it does reduce viral loads, you're less likely to have any symptoms so why would you be testing, assuming they reduce the need for testing for travel for vaccinated people as we get further out of this thing.
If an unvaccinated person wants to take on the hassle, cost and stress of testing, which would probably result in them isolating for a few days before their flights in case they catch it, then that's on them, that's the decision they make. But if they test negative on a PCR, then they haven't got it. And therefore there is absolutely no reason other than this friggin weird ideology people have got into their heads not to let them in anywhere, whether that be a match, a gig or a country.
The other argument, about unvaccinated people being more of a risk to the healthcare systems of the country they are visiting, could be applied, of course. However, you'd then have to apply that same rule to any single person with co-morbidities (for example my granddad has cancer, but he can still travel abroad). You'd have to apply it to obese people, or diabetic people, or people with severe asthma (my sister a few years ago had an awful asthma attack on a plane to Spain and she had to be taken to hospital for checks on arrival, they very nearly did an emergency landing!). Because ultimately, any of those people are just as much a risk to the countries healthcare system as an unvaccinated person.