1. At the start of the clip, there appears to be a military type twin rotor copter oriented towards the missile track..surely he would have filed a report.
2. That's a very heavy civil aviation area..lots of big jets in nthe skies..wouldn't one or more commercial pilots have seen it, and filed a report with ATC?
Personally, I don’t think the presence of, or authenticity of it being a missile/rocket is in question as many people witnessed it. As others from the SoCal area have noted, we’re familiar with seeing launches from Vandenberg AFB, much farther away, and when conditions are right, they’re easily visible and identifiable as a launch body plume, not a contrail from a plane. Therefore, identifying who was responsible for the launch is the open item, IMO.