They aren't even doing that anymore. I just flew to Nor Cal and back to So Cal. I had the proper see-through bag with all my liquids in it and I had stored it in one of the zippered pouches in my suitcase (I didn't check any luggage).
I forgot to take it out of my suitcase when going through the scanners, twice, and no one said a thing. I also had hand lotion and hand sanitizer in my purse that I had forgotten about and that went through as well.
The only thing one employee worried about was the size of my carry on bag and that was on the return trip. I had to prove that the bag had already been approved on the fight there. Crazy!
Fact.
Clear liquids can't be seen by the scanners.
That is why they tell you to take it out of your bag and put in the container.
So, honest people (again) do the honest thing and the criminal terrorist will ignore and get away with anything and everything.