This cold hard fact is not about what the law says about it being probable cause, it is about it logically not being probable cause. Now you may begin the futile attempts to prove me wrong.
All Americans have given up freedoms for safety. All laws restrict freedoms. You use to be able to smoke in a doctor's office and now you can't even smoke in a bar. You use to be able to ride a horse to the market, church, or local saloon and now only the Amish people can do it. You use to be able to ride in a car without a seatbelt and now you're required by law at all times to have one on your chest and one on your face. You use to be able to smoke a joint at a park bought from your local drug dealer and now they make you buy it in a store at 25% tax. Just like Braveheart, if you ask for too much freedom they'll cut your dick off.