My adversarial brain is wary that this will be a case for more KYC on mining pools
F2Pool to Return 20 BTC Tx Fee to Owner if It's Claimed Within 3 Days
An unknown Bitcoin network entity paid 19.82 BTC (~$500k) transaction fee to send 0.074 BTC (~$200) - one of the highest fees to date when measured in fiat.
https://www.nobsbitcoin.com/f2pool-to-return-20-btc-to-sender/
Discussion
The person who screwed up can proof control over the funds prior to the accident. No KYC needed. To pay out more than $10k it's still sensible to ask for ID.