Earlier quoted context omitted.
Note that what courts are blaming Amazon for is not to deliver unnecessary goods, but to not care enough for the security of their employees in their warehouses. So basically, it's not a problem for other delivery services who took stricter safety measures. If anything, telling them they can still continue deliver necessary goods is a bit lax, because their employees are not safer processing those. The Amazon answer…
Do you have any evidences about other delivery services taking stricter safety measures?
It is of course possible that other delivery services have similar safety measures and have not been sued yet, or have more lenient workers, or whatever; but still, it offers _some_ evidence that Amazon might have worse practices than others.