They can keep using whatever they're currently using.
This doesn't take away anything. It's a new standard.
Based on your argument, one should add new safety standards to cars like seat belts, because old cars might not have them.
This doesn't take away anything. It's a new standard.
Based on your argument, one should add new safety standards to cars like seat belts, because old cars might not have them.
But to your point,
While they might not be required to retrofit, one shouldn't stop defining new safety standards.
One shouldn't add new safety standards*
writing before coffee...