Because I’m not rich and I’m confident that it’s fine. Why would I go to the time and expense of proving an established fact to people who I don’t know or have any reason to concern myself with? I don’t need to prove the moon isn’t made of green cheese just because random internet commenters insist that it’s debatable. Besides, I have generously offered to submit my entire SLQ set to PCGS and CAC if some doubter wants to put their money where their mouth is. Alas, no takers on that, lol.