I always refer people to @rainbow guide since I think they have highlighted and covered a lot of questions.
I saw the video on your channel @harvvu and I think you already know the consensus that probably the cards might be fake. I say probably because there was another user who posted on Rainbow’s thread and they also claimed that they had pulled every card from vending machines in HK.
If you see the pictures, there seems to be mix of authentic and bootleg (presumably based on the indicators) but they are pretty sure all were pulled from Vending machines. My theory is that the vending machines did have original cards starting out but then just switched over to bootleg copies sometime because it was hard to tell the difference. So people using the vending cards had no indication that these cards might be bootleg.
Just my personal hypothesis.
Cheers!