Though it is true that many secular sources at the time would of agreed in the assumption that there were benefits from UV radiation, to put oneself forward as the mouthpiece of god and then make such a statement that is now obviously in error surly brings into question the validity of their self appointed position. I would say that looking at the foundation of WTS is a valid exercise in determining their credibility. I must report all I find is “sandy ground”.
More importantly its fun to do.