FYI, I have been worried about GradeAlab's communication for a while, but I did pull the trigger on a large order about a week ago. He told me he didn't have the full quantity I wanted available, so I ordered what he had. It seems like if he was doing an exit scam, he would have just lied and accepted payment for the full amount.
While I totally agree that the tone of his communication has changed, my order did arrive promptly. The stealth seemed the same as before, so it would be great if people stopped hinting at the details! For all the concern about opsec (and I agree that posting a tracking number is beyond the pale if that's what happened), there's no need to make it worse. I ran out of reagents for pre-screening, but I'll report back on the quality of this latest shipment when I get those restocked. The packaging was generally the same quality as previous orders, although the labels on the inner bags looked slightly different. While I do share a lot of the concern voiced by others, I'm not ready to write GradeALab off at this point.
There's been a lot of vague finger pointing and assuming that he went down a benzo-hole, but I think people should post concrete evidence (like "I paid for ______ 3 weeks ago and never got it", or "I received something that tested positive for rat poison".) Otherwise, we're nothing short of a lynch mob.