Personally, I'm kinda glad chips haven't been shipped yet due to the increase in difficulty. Sucks that people have put money into preorders but that was your decision. Yifu is a clever bastard but it really should have been expected.
There, I said it.
There is no real way to know with 100% certainty that they arent just mining with all those chips for themselves.
Yup sucks to be a preordering customer of AVALON chips.