I can’t understand why it would be at all safe to conclude this. In any other field, you certainly wouldn’t conclude that good visual design, attention to detail, craftsmanship, etc. indicates anything about the factual or moral correctness of the beliefs of the creators. Do the most beautiful and expensive churches indicate the most moral or theologically correct religious groups? Do the best designed uniforms tell you something about the wartime behavior of soldiers or the military policy of the country? Do the pharmaceutical companies with the best produced television advertisements have the best intentions and products backed by the best medical research?