From
https://abcnews.go.com/International/countries-learn-israels-covid-vaccine-rollout/story?id=75930083, "To examine the effect of widespread vaccinations among older Israelis, researchers from Weizmann Institute of Science, Tel-Aviv University and Technion
analyzed Israeli Ministry of Health data on hospitalizations and PCR testing from March 2020 to February 2021. The researchers found that infections fell among all age groups between between mid-January and mid-February, but the effect was most striking among the largely vaccinated group -- people 60 or older." This is not looking at individuals who completed their vaccinations, it is statistical analysis based on age group.
To maybe convince you that you are wrong about the "very real risk" of severe illness in people who are vaccinated, the story references another study which actually looks at 600,000 people who were vaccinated. It states, "While peer-reviewed published results from the study are not yet available, data from Clalit's study are showing a 94% drop in symptomatic COVID infections among those vaccinated and that those individuals also were 92% less likely to develop severe illness than those not vaccinated."
Doing the math, the vaccinated were 94% less likely to have any symptoms at all and among the 6% who did, they were 92% less likely to develop severe illness. That calculates to the vaccinated having a 99.52% lower likelihood of developing a severe illness. Deaths will only be a fraction of the severe illnesses.
Neither the Federal Government nor Disney has defined acceptable risk to mean the risk of dying from COVID is equal to or lower than the risk of dying from the measles. They have only defined that the the current risk with limited availability of vaccine doses is too high to change policies.