You’re talking about possibly multiple different squat types. A full depth squat you’ll naturally want to use the bounce, that means you’ve done the exercise correctly, it’s entirely natural.
A full depth squat with no bounce would be called a pause squat, you are purposefully controlling the bounce so you train a different part of the movement, you use these with regular squats.
A box squat or parallel squat does not use the full range of motion, you either stop at your thighs being parallel to the ground or you use a box or a chair for a queue.
If you have someone discovered something that every expert hasn’t, you should write a book!