Actually, Confidential Transactions doesn't do a thing for bitcoin privacy except for those few which are left to 'cook' for a couple of days in order to gain enough 'security' to recast themselves as a new currency and totally blow the coin supply's fungibility to kingdom come in the process.
Of course if you need them quickly you can always do a 'swap' with someone who's already 'morphed' theirs, but don't expect any freebies - everything's at a premium.
(Wait a minute - scratches head - we now have a distinct currency, with a distinct trading price but with no independent liquidity so it transmits its volatility all over the market including into bitcoin itself ? It's bitcoin's siamese twin ! If bitcoin had been born with such a defect, devs would be falling over themselves working out how to separate them
).
You do understand that DASH also has 2 currencies on the network? The mixed coins and the unmixed coins.
It's pretty obvious that DASH has fungibility issues. You need default mixing to solve this.