For your lay: the government puts a significant fraction of the coins into these boxes and can use the statistical information gained from this to deobfuscate transactions. If you put enough money in, either at once or slowly over time, they can figure out who you are.

Monero is untraceable (if you don't use a KYC exchange to get it), but Monero isn't "most" crypto.

You said crypto, in general, is mostly untraceable and that's very very wrong.

Monero is the exception, not the rule.

That's very understandable, but impractical for investments and savings, the US insures some banks and the like but it doesn't insure crypto funds, if people's savings end up there based on false promises (or if their assets are managed by a third party) they can lose everything and have no recourse.

This isn't a hypothetical, it's the story of countless people who lost everything to grifters. I don't think blaming individuals makes a lot of sense when it comes to emerging technology and when, again, regular finance is generally insured by the state. The biggest reason for scammers to flock to crypto is that there's a lot less regulation, making it harder to prosecute them. And that's my original point on the choice we have right now, even if ideally we want better choices in the future. Right now you either go with a traditional institution for financial services, which includes government oversight, or you operate on your own and assume a lot of risks, whether you're even aware of that or not (and financial actors purposely deceive people on this end, as it's in their best interest to do so).