Dr, Dr. Screenplay writers are normal people like you and me, OK maybe not like me and you but they have some similarities... they watch the news and read popular culture including some whacky websites, to get ideas for their screenplays.
There are only 2 rules that a screenplay must adhere to.
1.- Do not criticise Jewish people.
2.- now that I think of it, there's only 1.
So anything else goes Aliens, Remote viewing, Psychic phenomena, Chemtrails, MK Ultra, Drugs, Sexual misconduct, conspiracies, etc... and if you can include a Muslim terrorist or nudity you get a bonus.
Any one can be a writer and most are self employed working on numerous shows... and belong to some kind of union like a Writer's Guild.
So while TV is used for social conditioning it's the whole theme of the show... Like women presidents, womanising men, stupid teenagers, cool gay people, promiscuous women...
Back on topic, if you can see these chemtrails, next time u see them get your camera out and take a photograph

I've never seen any in Australia, and since I'm a paraglider and used to be a sailplane pilot I spend a lot of time looking at clouds... and I've seen some unusual things.