If we were still seeing a shortage in vaccine supply and people didn't have the option to get vaccinated, I would 100% agree with you, but we're at a point where risk for most people is completely in their control. If people are making plans to take vacation and not making plans to protect themselves before they go on vacation and refusing to follow guidance to wear masks if they're unvaccinated when they are still encouraged to do so, it's on them. If I'm not mistaken, Universal as well as many airlines and hotels are still being flexible with booking vacations while these restrictions are lifting.
The vaccines are incredibly effective and are making your risk of contracting COVID-19 in public lower than the risk of contracting the flu.