But Google is not trying to make people live healthier, it doesn't care about that. Google is trying to prevent hazardous working conditions for their employees. All vaccination mandates are about that: they don't care about the vaccinated or unvaccinated person, they care about the risk that person presents for its environment. In that sense the obesity analogy completely fails.
Obesity is culturally infectious. If you have fat friends/family/SO you will get fatter in most cases (more than 1%). It is also acutely deadly as most of thr top10 death causes are directly related to diet and lifestyle.
Important to note that obesity is excess of fat related to general bodyweight, not only total weight.