I've had several of these conversations with people. Putting on the tinfoil hat, it's easy to see how governments could use cryptocurrency for nefarious means. Especially surveillance.

My biggest worry is the old bait and switch. Give them bitcoin then replace it with a CBDC that they control.

Simple scenario, introduce BTC to the world, let all the cool kids talk about it online, start promoting it, make BTC use cool. "It's the future of finance." Talk about it's privacy features if used properly... Weave a little Anarchy and Libertarianism into it... Then....

The bait and switch. "Oh we can't have this (BTC). The terrorists, drug dealers, pedophiles, etc... But here, (CBDC) you can use this. This is safe and we can monitor all the activity so 'ONLY THE GOOD GUYS' can use it"

I'm pretty confident that's the way this all plays out. The sad part is, the population is dumb enough to fall for this routine OVER AND OVER again. Shame on all of us really.... Just saying.