KYC is a tool to prevent money laundry and it's typically an obligation of financial institutions. Sending money to an anonymous (to you) recipient is generally not a KYC violation if you are not in the money transmitting business and you aren't doing the payment on behalf of someone else.
There are infinite shades of gray in this topic, of course, but I can't see AML being relevant in this particular case.
From Claude, maybe it's a little nuanced compared to conservative corporate policies, but doesn't feel very legal: "You can be charged with money laundering (18 USC 1956/1957 in the US, equivalents elsewhere) if you knowingly — or with willful blindness — process proceeds of crime. "I didn't ask" is not a defense if the circumstances were suspicious; deliberately avoiding KYC to preserve deniability is exactly what willful blindness doctrine targets. The recipient doesn't need to be formally sanctioned; the funds just need to be tainted."