Vaccination is the only solution to get mass travel moving again.
Of all the blunt tools in the shed to deal with C-19, vaccination is the sharpest but is still far from a solution to this C-19 problem. All the current evidence suggests vaccination, like the other tools in the shed, only allow us to buy more time while scientists strive to find a better solution. The US and Israel are now talking about a third booster shot because of technical limitations with the current best solution.
To be fair to Alan, he makes a solid point when he says that if COVID vax is not your thing, then international aviation going forward is probably not for you.
Rest assured like most modern CEOs Alan cares not one iota about your health and well-being, you are very replaceable in his quest for a level of remuneration that you will never experience in your own personal lifetime. Unfortunately he is the boss, and like the many other company CEOs that have recently jumped on the bandwagon of reducing the whole complexity of this entire issue down to a simplistic no-jab-no-job slogan, they are not doing it with your interests in mind, they are not epidemiologists, they are just business people obsessed with making money full stop.
Whether you like it or not, a global pandemic that actually kills people is really bad for business. Vaccinated people still die, but don't let that get in the way of profits.