The statement

“A typical chemtrail first appears as a white line high in the sky emitted by a large jet airplane. These lines become diffuse as they float down to earth. Heavy spraying creates a thick haze over vast areas. Chemtrails often form Xs and sometimes grid patterns. Chemtrails are also sometimes sprayed in a circular fashion. Although seemingly endless amounts of photos and videos are posted online, you can observe these phenomena with your own eyes. One just needs to look up.“

The source

So you STILL Believe It’s a Conspiracy Theory, an article by Peter Kirby posted by Steve Allen on thinkaboutit.online on 1 June 2022

My take on it

Yup.

I’ve looked up. The photos below were taken by me within recent months, in northern Sydney and on the Central Coast. You are free to go on thinking they are natural if you like.

For me they raise obvious questions: Who? And Why?

As for How, I refer you to another article catalogued under Geoengineering on the same website, Weather as a Weapon of Mass Destruction (by Steve Allen on 15 September 2017). If you were doubting the technological possibilities and the widespread real-world applications, this should be enough to set you straight.