The Souvenir Report presented was not prepared by Russell, and thus only presents the what Rutherford and his associates claimed. It may be that Russell actually had approved the building of that monument, but Russell himself never wrote any about building such a monument in the Rosemont Cemetery.
I have reworded one of the paragraphs quoted as follows:
This pyramid monument is not Russell's gravestone, tombstone, or grave marker. Rutherford had this monument constructed in the middle of the plot owned by the Watch Tower Bible and Tract Society, not just to honor Russell, but to honor all who died while working at the Watch Tower headquarters. There are numbered spaces for many names that were to be inscribed on that monument, not just Russell's. Rutherford, however, abandoned the witness of the Great Pyramid before the names could inscribed, so that the pyramid shows a lot of numbered blank spaces. Nevertheless, there is no one buried in or under that monument.
I will also present the following paragraphs:
It was claimed that Bohnet, before Russell had died, received authorization from Charles Taze Russell for the building of such a monument. Russell's written instructions, however, never mentions the building of such a monument, so it may be that Russell never actually authorized such a monument. Such an extravagant use of funds would seem to be out of harmony with the character of Russell; on the other hand, Rutherford came to be known for his flamboyant methods.
Whether Russell was buried in or under a pyramid, however, is not as important as realizing why many wish to have Russell buried under such a monument, that is, to further the false claims that Russell was an occultist, or that Russell was into some kind of spiritistism, Satanism, demonism, etc. In reality, the Biblical study of the Great Pryamid has nothing to do with such.
Other than the extravagance, however, we find nothing concerning Rutherford's monument to be objectionable, although many, by use of imaginative fanaticism, seem to see "occultism", "Masonic symbolisms", "astrology", "spiritism", and many other evil things regarding Rutherford's monument, as well as in or on the books and publications of Charles Taze Russell. It is not that the graphical symbols, such as the "cross and crown", are actually "Masonic", or "occultic", etc., but this is what many are being led to believe through imaginative assumptions that they are; and what is being imagined is then presented to be fact and proof, for instance, that Russell was a member of the Masons, and/or that Russell was, as they usually put it, "into" some kind of occult/spiritistic/demonic/evil/devious/deceptive "practice" and/or "plot".