He wasn't just involved with GrayJay, he's actually a member of FUTO - the company behind Immich and GrayJay. Now read grandparent comment one more time:
> Wouldn't be surprised if this leads to a lawsuit over monopolistic behavior
His reaction also matters because he's basically the public face for the company on YouTube and has a huge following. You've probably seen a bunch of social media accounts with the "clippy" character as their avatar. That's a movement started by Louis Rossman.