It really is a slippery slope. With CBDC which this proposal paves the way to, there is an expiration date on the currency and what you spend the currency on is controlled.
If, say, you've gone over your monthly quota for steak, you won't be able to buy it for a while. This level of control will then deepen and go into your travel habits; if you've done too many miles in your car (probably electric), your car will be immobilised.
If you've had your heating on too much, they'll cut that off for a while. If you've bought too many clothes be they second hand or new, if you've used too much water, if you've used too much electricity, if you've used too much internet, if you've made too many phone calls or sent too many texts etc Every fine detail of your life will be under close surveillance.
Coming off the gold standard in the 1970s has been a disaster. Fiat currency has allowed the government to swindle, lie and cheat for decades and they're running out of duct-tape, cable ties, glue, blu-tack and pins to hold it all together.
At this point, I'd be investing in gold. The value of gold never plummets and by putting your hard-earned money into a stable and solid asset, you'll have something to fall back on should everything go base over apex.
It really doesn't matter about whether or not you have something to hide. They want power, that's it. That's the end game of a government that has grown increasingly power-hungry. And honestly, it also doesn't matter if the entire nation throws its arms up in protest, they'll ram this crap through anyway.