The problem with measles is that it is as infectious as covid and we need to rely on herd immunity (enough people vaccinated so it is harder for the virus to spread[1]) to contain it. So with less people vaccinating means even ones that did vaccinate could still get sick. They will likely not get as sick as without vaccine but that still sucks.
This is why this will suck for everyone.
[1] it is still our body to protect us, but different people have different strength of their immune system. This is why is infuriating hearing antivaxxers that there are people who still caught covid even when vaccinating and not realizing that they are the ones contributing to it.