In crypto, this is not true. Your money, your assets, your everything can be taken from you by one mistake, by one false step, and nobody can reverse it except the people who have benefitted.
This is why I don't believe in crypto. My fear of government is less than my fear of a world without an override.
I used to mine BTC when you could still use GPUs, even thought about buying ASICs for a time. I've bought and sold at least a dozen kinds of coins on exchanges, off exchanges, meeting people in Starbucks, etc.
I've made money off it, but I just don't get it. There's no legitimate purpose to it. DOGE, SHIBA, BTC, BCH, BSV, it's all a big joke to me. Maybe I'm stupid?
But it's impossible for the crypto system to ever work at reversing transactions. It's designed around that.
You're replying to a comment which mentions that yes, in fact, this has happened. https://www.gemini.com/cryptopedia/the-dao-hack-makerdao
However, it is unlikely that this will ever happen again. The coordination costs behind pulling off this kind of fork are massive. It's difficult to imagine today's more decentralized community could ever agree to do such a thing.
As an example, Parity later lost an incredibly large amount of other people's money and the community decided not to roll that particular mistake back: https://github.com/ethereum/EIPs/blob/master/EIPS/eip-999.md
e.g. two months ago the Geth team (and other community members) were able to change EVM behavior without even telling people what the change was. They simply said the EVM does something very unexpected ("there's an EVM vulnerability") and if we all hard fork (immediately update your Geth node) then the EVM will not do anything unexpected.
here's the release: https://github.com/ethereum/go-ethereum/releases/tag/v1.10.8
[0] https://en.bitcoin.it/wiki/Value_overflow_incident
[1] https://freedom-to-tinker.com/2015/07/28/analyzing-the-2013-...
Provable bugs in the system are not the same as accidentally exposing one's keys. Let's say I bought a used motorcycle from someone with BTC. Then I spam the community claiming the individual I bought from had in fact used malware to access my machine and stole the coin that way. The community to my knowledge has never reversed such a loss, nor should they be responsible for doing so.
What about the little guys?
Send crypto to the wrong address? Oopsie.
The fact is that in many, perhaps most cases of theft the Government isn't able to do much more than punish someone they think did the crime, maybe they can recover the assets, just as often those assets are evidence and you don't get them back for years.
The crypto equivalent appears to be chainalysis and similar products.