[unreal37]

It sounds like they suspect someone who helped design the original Pokemon trading card game - Takumi Akabane. A prominent investor claims to have gotten the cards directly from him and doesn't care if they're fake as a result.

Maybe the original designer wants to make a few more dollars.

[HanayamaTriplet]

Akabane or the buyer could be the original source of the fakes, but the grading company CGC was responsible for "verifying" that they were authentic before they were sold at auction:

https://www.cgccards.com/news/article/13347/