I do not have the understanding that, if you introduced sufficient entropy on your own by rolling dice, you NEED to move your pile. It is my understanding that the big dogs in the space are advising anyone using a CC to abandon the device and seed out of an abundance of caution.

Agreed. It's just the RNG that is the issue. Coldcards would still be safe if that bug didn't exist.

Multi sig is the answer, delete ANY single points of failure.

Perhaps he's worried about other potential mistakes beyond seed generation

he literally told people not to roll dice https://video.twimg.com/amplify_video/2083577909483122688/vid/avc1/1152x720/vSHDzUpz_MvQKuVC.mp4?tag=14

It's more that someone who would fuck up the encryption on a Bitcoin wallet should be assumed to be generally incompetent.