In my experience, making large powder setting changes with the graduated screw took much longer than 20 seconds to accomplish dialing in the desired powder charge. Changes like going from 38 Special target wadcutter loads to 44 Magnum wrist snapping loads.
If starting at approximately the desired powder charge, maybe. That is where the quick change systems or micrometer stems come in.
But, I used a Uniflow powder measure with the standard graduated screw for about 15 years before I stumbled into a micrometer stem powder measure. The Midway Indispensable powder measure I bought came standard with a micrometer metering stem and I was hooked. Other powder measures use different locking systems for the metering stem than the RCBS Uniflow. Some better and easier to adjust, some not so convenient.
I tried the quick change stems on the L-N-L powder measure that came with my Hornady press and it works but it did not suit me. I'm sure other like them. I already had a Redding 10-X powder measure so I modified it to work with the Hornady case activated powder measure die. The modified Redding die works great on my L-N-L, Pro2000 and Dillon BL550 progressive presses.
I do not have any experience with the Uniflow quick change powder measure. If GW Starr likes it, it is probably a good system, he does some great things with RCBS progressive presses. I just do not need another powder measure to try at this time.
Bottom line, there are many ways to skin a cat, so do what works best for you but hearing what others do might provide some ideas to explore and improve your reloading experience.
Even if I could afford to hire someone to reload for me, I would not shoot someone else's reloads.