Simply, no. This is by no means any sort of good news for bitcoin at all. If anything, it is bad.
They aren't even creating a decentralized coin here. They are blatantly just creating a centralized shitcoin, if you will. They will control the supply and demand of the crypto-CNY, transactions will be reversible probably to combat fraud, and the whole thing is no different to the current bank setups if you think about it.
You are absolutely right here (and I basically agreed in one of my two posts I provided links to.)
There are of course many forms the 'crypto CNY' can take, but they'll all have the same basic features you describe. (Please also note that this would also be no different from the gold and silver standards the elites have used to control money and finance over the last few hundred years.)
I don't get why you think just making something crypto is going to generate interest for investors. Sure, it might be more convenient, but in this case it's not decentralized, therefore it is still controlled by the government.
Imagine some government suddenly backing their money with gold, as in the past. If they set their price of pegging carefully, their system will be very stable, initially, since they'll have enough gold to defend the peg against any capital flight. Of course gold would command a much higher price than today. This act would amount to cancelling most current debt and resetting the system. It would provide a new stability and prosperity for the country since it would allow that country to print and borrow money without suffering instability, at least initially. This was essentially what France did in the 1920s. A lot of money flowed to France. A crypto-currency will be no different.
This would be devastating to the imperial system since it would further undermine confidence in the core imperial asset, which is the dollar. This is why the US-led system won't tolerate any country moving in that direction. Since China is not afraid of the US military, and apparently there are serious disagreements between Washington and Beijing at this point, this move is a valuable bargaining chip in Beijing's pocket.
If and when governments begin using blockchains to back their currencies, every time they're in conflict, the non-state Bitcoin will become a weapon they use against each other. As I repeated many times, we don't have to worry about what form any money takes; we do have to worry about unity among the elites of different countries.