2 thoughts about chemtrail memes and scientific illiteracy...
1. Chemtrail jokes will be funny as long as there are chemtrail conspiracy theorists.
2. People who lack a real scientific explanation for an observed phenomena will almost always come up with something to explain what they have observed. In the way back past, various mythological deities or magic would be behind unexplainable things. God being sort of unfashionable nowadays, pseudo-science is the inevitable result.
I've seen the same thing in numerous other countries, so it's not just the US. For example, some of the pseudoscience being invented wherever the US is conducting high-tech combat ops is quite creative, trying to explain how we are doing what we're doing...