It's difficult for me to tell how many of the issues in that thread are serious, because there also seem to be a surprising number of people who come back to say "I solved it by enabling h264 in my browser".
On the other hand there are people who say "I ordered three, two work and one doesn't" which seems like pretty good evidence there can be real issues with the hardware.
On the other hand there are people who say "I ordered three, two work and one doesn't" which seems like pretty good evidence there can be real issues with the hardware.