Nope. Depends entirely on the purpose the dog was trained for. The TSA are still looking for cocaine, heroine, meth etc. If you've got an ounce of gorilla glue stashed in your suitcase, you're gonna get flagged but probably not arrested. What the TSA aren't as concerned with are gummies and vapes. Weed is not their chief concern, but they aren't just "not looking for drugs" because weed is legal in some states.

They still use drug sniffing dogs in tandem with explosive sniffing dogs. Drug smuggling is still very much an issue. You've never heard of a narcotic sniffing dog?

Edit: spelling and grammar