But Credit Coins (ticker CCS :-) are actually sats. just temporarily trapped into SN. As I see it, they can get out of here when you use them to pay SN fees to post or reply and then get distributed as rewards (in sats) the next day, aren't they?

Personally, I prefer to get CCs for small amounts, instead of keep getting a lot of small transactions to my external wallet. So, while they last, I like them and take advantage of them that way.