Masks help decrease the number of infections that would’ve happened without them. Nobody, absolutely nobody has said they can eradicate infections altogether. Especially when not everyone wears them and those that do don’t always wear / use them correctly.
Please stop using these straw man arguments.
Without the precautions and vaccine a great deal more would have died.
If you’re “exempt”, then the reason you’ve given for your exemption makes not wearing one ok, Ricky.
It does though mean that very reason makes you more vulnerable and more likely to pass the virus on.
Be careful – keep yourself, colleagues and customers safe.