Measles is not as benign as some may think. It helped to almost wipe out the native Hawaiians in 1848.
https://www.history.com/news/hawaii-monarchy-downfall-measles-outbreak
That’s because they had never encountered it before and had no natural immunity.
I can see that for some like in that situation, immunizations would be very beneficial. However, for someone with natural immunity built in through their ethnicity, it’s a different matter.
The real concern is that should something happen where vaccines are no longer effective nor available, there would be a lot of people in a lot of trobule if they were not immune from childhood exposure.