In order to have a CBDC, a quick and reliable payment system will be needed. I think your response only helps my case.
From your earlier post:
FedNow will enable them to control payments.
They already control payments, but are just slow about balancing the accounts afterwards.
They can confirm/reject payments real-time already ... just that the transaction requires longer to balance out of a pending state, but transactions can already be approved/denied in real time. They could attach "social credit" considerations at point of sale whether or not they immediately balance against your account, so long as there's an electronic form of payment. Nearly all debit card transactions go through VISA or Mastercard already.
What they need to do is stamp out alternatives, such as paper cash and, to a lesser extent, alternative currencies like BitCoin. They can't control cash at point of sale, and can't really put a stranglehold on BitCoin ... just yet, even though they've tried to regulate it more and more. When the time comes, they can just wipe out and ban the cryptos. Those really can't be used for normal transactions anyway. I can't go to a grocery store and pay them with BitCoin. It's limited to some relatively-niche online vendors.
Stamping out paper cash is the key. Once they've gone electronic, whether they're fast or slow in balancing the accounts doesn't really matter. If I show up with my debit card to the grocery store, they can deny transactions right there for social credit reasons if they want to regardless.
I recall when a lot of retailers were refusing cash during the COVID plandemic because it could allegedly transmit the virus. But if the US dollar hyperinflates and becomes worthless, they would probably have to issue a replacement currency, and that's when I think the transition will happen. US dollar could hyperinflate at any time. It's just a question of when they feel like letting / making it do so.