For what reason would they ever offer cash money for promotional credits? You can't just walk into a store and ask for cash in exchange for coupons/vouchers.
Amazon does this all the time.
This is a quick way to get your Amazon account some black marks and fast track it to get it banned.
Coins have a very explicit use and trying to abuse it in this way is insane.
Weird because I've been doing this for years. Then again, 80% of all my yearly purchases are on Amazon so they probably like me enough to convert coins or whatever to universal credit once or twice a year. Especially when it's still spent within their ecosystem.
Look, you guys can do what you want. I was passing on proven methods that may have lead to you having $23 in Amazon credit from coins. I am never not nice to the customer support people I speak to, and it works out for me. If you have an issue with it morally, I'm sorry we disagree.
For those that are of the same mindeset as me: Good luck, God bless, and PM me if you have follow up questions.