For the moment, the countries pursuing zero COVID are still doing the best job of protecting there population from harm and at the same time allowing their populations most freedom.
That might change, but I don't think the current knowledge about COVID and the current vaccines warrant such a change.
In time we will find out how much protection can be provided against the financial damage that countries and their citizens will endure in the years ahead.
Priority at this time is physical protection, which is voluntary for most - those without vaccines and hesitancy -, as long as folks buy in they will continue to endure the restrictions, unfortunately, a number are opting for not following protocols and no vaccines, so plan C is the open question.
I don't think any country is intending to pursue elimination "for ever" in fact even elimination beyond the immediate very short term just while they get their vaccination rates up as high as possible. Probably within the next six months. That appears to be the prevailing view even in NZ which is currently desperately trying to reestablish elimination.
It looks like even with maximum attainable vaccination rates, given that vaccines for children have not yet been universally approved covid outbreaks will not be self extinguishing. So no herd immunity. Covid will be endemic around the world. So I think travellers can reasonably expect ongoing and evolving biosecurity border controls to limit cross border transmission, as a minimum, proof of vaccination. With additional requirements, such as pre departure testing, and even perhaps temporary prohibitions from travellers from areas currently suffering from larger outbreaks, covid hot spots. Just as we have had in the past for travel from areas suffering from Ebola transmission. Local outbreaks can still be expected and may require short term imposition of public health interventions such as mask wearing, and even gathering size limits, to stay within the capacity of the local health services. I think it is actually foolhardy to promise no more lockdowns . They are are undoubtedly a very blunt instrument, with huge collateral damage but they are the most powerful tool for suppressing large outbreaks. But any lockdowns may well be more targetted, restricted to just some schools or hospitals or defined geographical areas. So international travel has just acquired another risk, and perhaps cost to be considered and perhaps insured against.