Hello again, @WillemCramer, @mawa, @shaderbytes, @Evgeni_Popov. I have been trying all the approaches that you suggested, but the problem persists. I can reduce the number of vertices by decreasing the number of steps in the extrusion process, but that’s about it.
I believe the problem is somewhat similar to the one discussed in this particular thread: How to delete obsolete vertices / facets? How to get only the "real" ones?.
When you examine the shape more closely, you can see that several vertices are being generated along straight lines. I didn’t think this was possible in a 3D render.
I also considered the possibility that the issue lies in the way I am generating the final form by doing the CSG operation, but I haven’t been able to find an alternative method. Am I hitting the end of the road here?