It's entirely possible that the BYD key they scanned and the BYD key you possess are of different designs.
Possible, but I doubt it.
Article says key fobs are the same across all their cars and this looks the same as mine for a Sealion 5, there is no hinge for the key you just pull it out.
Likely the article authors just assumed from looking at the scan, if they’d actually tried to remove the key they would have realised their mistake.
This: different markets get different style keys.