It'd be more helpful if you could explain for the class why you disagree with their comment, rather than disparage it with nothing of your own to offer.
It costs a lot more to block one than to build one, and Trump's already blaming Biden because the US is running low on the top tier interceptors. Congressional testimony suggests the current stockpile will last weeks. After that, they'll fall back on ones that are less accurate, and that will let some attacks through.
The destroyer doesn't help much in that scenario, in the same way it's not going to stop mosquitoes from biting the oil tanker's crew.
You could use it to transport a large number of interceptor drones behind an armored hull, I guess.
But, in scenarios where you need to worry about strikes taking out stored interceptor drones on the tankers, then the tankers are already swiss cheese.
