Here is the problem with speculative thinking about extraterrestrial life as well as about the origin of life.
The impressive complexities of proteins, nucleic acids, and other biological molecules are presently developed in nature only in living things.
When Tour gets done, the narrative we all learned in high school biology class is in shreds on the floor.
Perhaps scientists fear that acceptance of this conclusion would open the door to the possibility (or the necessity) of a supernatural origin of life.
That Jon was able to get The Mystery of Life’s Origin to see the light of day was a miracle.