The vaccine does a reasonable job at reducing transmission in the aggregate. It lessens the average viral load, shortens the average time a person is infectious

The vaccine does a reasonable job at reducing transmission in the aggregate. It lessens the average viral load, shortens the average time a person is infectious, etc. Treating transmission as a boolean ignores the large-but-not-100-percent improvement. Better to treat it as a distribution. I don’t see what you are blaming regulators for.