Sorry to say this, but the man on the video seems like an uneducated type.
The language he uses and his lack of reseach confirm this.

Lets look at the movie.
The first aircraft is a Gulfstream I from Batelle. Registration is N701BN
[link to www.bnl.gov]

Very sinister looking tubes, but why are half of them facing the wrong way?

The plane is not for spraying the atmosphere, it’s for sampling the atmosphere. It’s a research aircraft, registration N701BN, operated by th e department of energy’s national labs. It’s pretty much one of a kind, so it’s hardly likely to be responsible for all the persistent contrails we see every day. The research is mostly on pollutants in the atmosphere, particularly from coal and oil burning power plants. But they also investigate the properties of clouds, which includes contrails.
The picture even shows venturi tubes. In early days they were used to provide a partial vacuum for gyroscopic driven instruments.
[link to www.flickr.com]