Your response hits the mark in a more comprehensive and succinct manner than the video.
With latency I get that Dr. Cottrell was speculating that researchers were seeking to develop a vaccine, but if lab developed in the first place why bother? Why and for what purpose do you and/or Dr. Cottrell believe the virus was engineered for? As a bioweapon? And, if so they needed a vaccine for those they want to save/protect?
Sorry if I'm coming across as dim here.
Never even occurred to me that there would be a signature so to speak for original developers based on competencies!
The first evidence I noted that the nCoV pathogen was bioengineered was that it was based on bat coronavirus, which was a competency of the Wuhan BSL-4 lab.
All of this gets into strange territory when it comes to a regular joe or sally trying to determine what might be a life saving vaccine and what might be a killer. I'm sure I'll come off as a bit batty, but I've been very wary of the great socialization in regards to flu shots as of late. Just pull into any grocery or pharmacy across US and there are free ones being offered (multiple signs) and a great press from general public to do it. I've wondered many times about this push/mentality in a greedy society which gives less to those most in need, yet pushes for free inoculation for all and how once that is set it's a great way to cull the masses in a resource crunch.