Hi,
I friend of mine bought recently some BTC from ATMs in Switzerland.
Because Switzerland has a limit of 1000 CHF per month without KYC on ATMs,
he bought 10 times 1000 each, with fake phone number.
He wasn't money laundering, just using his own legal money for HODL,
while he didn't want to do KYC.
Now he is wondering whether he might get problems cashing out in the future.
If his aim is to cashing out, he will do KYC sooner or later. This is how Banks/ FIAT world works.