It's scary stuff if real (and these pilots and Aegis radar operators believe it is).
Lots of confirmation biases and "appeals to improbability" fallacies ("it's impossible therefore it cannot be") coming from people who still can't get their minds around this stuff. That said, some folks are going to have a hard time with what is going on here.
But when a former Deputy Assistant Secretary of Defense for Intelligence says (I paraphrase) "whatever they are...they're here," something big is going on. Something in addition to Chinese drones and clutter.
Oh absolutely. They know it is something much bigger than we can imagine or comprehend.