KYC applies to the withdrawal address from a KYC exchange. Your mugshot is literally attached to that address, and everything that touches it, like your other bitcoin. If you are holding it for posterity, then do them a favor and mix it and cold store it, so they don't have to deal with some bullshit transfer/capital gains/6102/or other bullshit that comes along to steal potentially ALL your bitcoin. Yes, all, because that is the direction those thieves are taking this.