Okay, so then calling it KYC free is misinformation. Chain swapping to XMR is a vaild strat for some forward looking privacy but again lots of ways to shoot yourself in the foot there to (ie swapping back to btc to fast)
The entire point of avoiding KYC is to avoid having a record that you ever had anything to do with any cryptocurrency to begin with. So while this particular strategy might clean your coins and give you some forward-looking privacy at the end of the day there's still a record on both cash app and kraken that you have bought and swapped cryptos around.