Note the smiley after "strongly disagree".
It's not that easy for me to argue in a foreign langage, so forgive me if this is not very clear.
If I understand correctly, what you are describing is HSM (high speed machining).
There are now other roughing strategies (trochoidal milling for example) that allow cutting at high speed with a high pass depth. I cut HDU board up to 30lb/ft3 with a 1/2" end mill, 45% stepover, 2" pass depth at 50 ft/mn*. After each main Z pass, the software cuts again this pass with several small Z steps. Which means these shallow cuts only require cutting along the previous cut. So I finally get shallow cuts after removing quickly raw material and I can run 3D finishing at full speed.
Again, this software (CAM only, no CAD) costs me much more than Aspire which is worth every cent. I did not bought another software because I was not happy with Aspire. I already had this software for jobs that are very different than bas-relief and bought Aspire later. Aspire tool path (including finishing) are not well suited for models with high slopes, but it's not its first goal.
* for those who use a coherent units system
: 480kg/m3 HDU, 12mm end mill, 50mm pass depth at 250 mm/s