I don't find it odd at all. People see what they want to see. How many of them have actually seen a military surface-to-air missile in flight? It's quite a sight to see, especially at night. And none of the descriptions I've seen resemble one.
Would that include pilots and military veterans?
How many of them have actually seen a military surface-to-air missile in flight?
This is not a top secret thing.
There are many more military veterans on the streets than exist in active military.
In addition with the Internet and video, many millions have seen rocket/missile launches from nearly ever angle possible.