If they are able to fix it, why add a sheet of paper saying you could notice a drift that exceeds the 5ppm?
I don't know.
Nevertheless, I'm willing to be agnostic on this and see if AOR comes through and resolves the issues everyone has documented.
I certainly agree, if the receiver still suffers from serious drift at the end of the day it's worthless and AOR have shot themselves in the foot over this.
Also concerned, as you are, with the very basic level of the digital technology, though that could be improved with future firmware upgrades.
Icom appear to be streets ahead of AOR. I've just uploaded the most recent firmware to my ic-r30 receiver and I wasn't even aware of any bugs since I purchased it, very pleased with its performance and it was $500 cheaper than the ARDV10 though doesn't decode as many digital modes.