Not necessarily true. Stolen funds can be rendered useless to the thieves and eventually recovered. Just sit tight, watch them move around on the transparent chain and reclaim them when the morons try to cash out.

Assuming Bitcoin stays on its current course, all the thieves did was HODL some for your portfolio...

https://www.justice.gov/opa/pr/department-justice-seizes-23-million-cryptocurrency-paid-ransomware-extortionists-darkside

https://techcrunch.com/2022/02/08/married-tech-entrepreneurs-arrested-charged-with-laundering-funds-from-bitfinex-crypto-hack/