It makes sense to play that way
as you take out at the least two variables, deflection and throw.
jack
There are many variables within those variables.
Swerve variables - how high or low ball is hit, how far off center, shot distance, shot speed, cloth slickness, chalk
Deflection variables - shaft stiffness, shot distance, how far off center, chalk
Throw variables - amount of cut, ball slickness (clean /dirty), amount of spin, shot speed.
Shape - If you are using right/left then you are either throwing the ball or plan on hitting a rail to get shape. So now you have cloth, spin, approach angle and speed to also factor in when it makes contact to the rail.
We take so many things for granted as we shoot and one would not think of all those things on every shot, but they would have an affect on every shot none-the-less. We adjust over time, but each different table cloth or set of balls makes an adjustment necessary.
I am of the belief that most people try to work the cue ball around the table with spin way too much and that you can get to 95%+ of your shots by simply changing your tangent line off the object ball by using follow or draw along with speed. Sure there are times you will need to throw a ball so you can hit it more full and maintain better shape or have it spin off a rail to help widen or lessen the rebound for a tight window on the next shot, but it is not nearly as often as we think.
I would challenge anyone that uses spin constantly to spend some quality time refusing to use ANY spin for ALL shoots and see how your game goes after you adjust. I would be surprised if you said you are less consistent without spin then you are with spin. I know it made a big difference in my game when I started doing that many months ago. One of my bigger battles still today is trying to resist the urge to use spin still.