Here is my 2-penny bit.
I see it more as a difference between achieving excellence and very-good results. Professional photographers, who deal with hundreds of photographs, cannot afford to spend too much time on one photo to make it excellent. That is why they prefer the commercial products, which deliver very-good results very quickly. DT on the other hand will provide excellent results, but will take time to develop a single photo.
I have created a module group in DT which has a few, but the ones I use most often. It has around 7–8 modules. Yet, every so often, I realize that the modules are inadequate for a particular photo, and I search for the right one. This is the other problem with DT. It has far too many options, and the same/similar results can be achieved with alternative modules, so which to choose. It requires a person to be peaked in the science of color to differentiate one module from the other in its usage.
DT has the problem of plenty. So the long and short is to isolate your commonly used modules, and, if you have many photos to process, live with a very good result and not go for excellence, even if DT tempts you to do so with some other modules. The delta improvement may not justify the time spent.