However true this is, if coins are moved what are the implications?
The market would obviously react to that but long term, things would just be fine.
And if one person holds coins in bitcoin before 2017 doesn't the same person hold coins in BCH?
Yes, if they never moved those coins out of the wallet before the forking event.
Why would Satoshi want to move coins if he could just move BCH? Asking for a friend.
Ummm, because BCH is not Bitcoin?
Why would the Satoshi move a coin whose founder tried so hard to fight against Bitcoin?