Older people should get it first, because they're the ones mostly at risk. Check out the covid deaths by age group https://www.cdc.gov/nchs/nvss/vsrr/covid_weekly/index.htm
Of the 480,000 covid deaths they have confirmed, only 7,000 were people under the age of 40. It's rare that someone young without comorbidities dies. But for people 60+, this is extremely dangerous.
What were my rights doing over in Vietnam?