Are you proposing that the Pentagon can’t tell the difference between a large missile and an airplane?
I think they can. What would the Pentagon's reaction be IF a missile was launched off the CA coast? What would the Navy and Air Force response be? How many aircraft and naval craft would be scrambled to the area? How many sorties would be sent up and down the coast? What ships anywhere near would be boarded? What missile detection alarms and response would be triggered. IF it were a missile?
What would the military response be if it was a missile, and what has it actually been?
"The North American Aerospace Defense Command, or NORAD, issued a statement jointly with the U.S. Northern Command, or NORTHCOM, saying that the contrail was not the result of a foreign military launching a missile. It provided no further details. "So, you have the Pentagon saying it's not their "missile" (and they don't know what it was), and NORAD saying it's not a foreign missile. Neither are saying it is a missile at all.