Gu didn't release the ONYCD or Tres Sister x Star Dawg because JJ asked him not to. And when that was mentioned in a thread on IC he was happy with the results. Then when someone else said something about him using there testers in a breeding project on IG and Cannazon JJ then mentioned the Chem 4 cross. And according to Gu he didn't use any of said persons work, and as far as I could tell he didn't use any. But I also don't know what strain or strains he has put out so I can't be sure but he said it on a public forum and IG so if he did I don't think he'd make himself look stupid so blatantly.
It's just funny how much this weed/seed game is like high school and people click up and go from one side to the next. TONS of breeders release things without testing slay people with the prices because they have that clone or male that everyone wants a piece of. Gu isn't pulling any trickery, he didn't pull one of those bullshit statements saying they were tested "in house" or "locally". When push comes to shove everyone knows the deal so if you don't like em don't buy em.