I haven't read it...but I'm going to go out on a limb and guess that the law was written to prevent all the curb-side puppy and kitten vending you see. How many times have you driven past a Wal Mart parking lot, and out at the far corner, there is an SUV with the tailgate up...and beside it, a wire pen filled with puppies?
Always makes me grind my teeth to see stuff like that.
As for someone wanting to meet a buyer somewhere to sell a single snake, I seriously doubt they would be impacted by something like this. They're not sitting out there with a big "For Sale" sign waiting for customers to wander by.