As long as you submit those KYC documents in a safe and trusted crypto exchange in your country I believe that you have nothing to worry about unless it is about hacks. Businesses in the crypto industry didn't want KYC in the first place but when the government got more involved with the crypto industry a KYC requirement for AML procedures is an inevitable thing to happen. You should be used to it by now since if we are talking about cryptos we are talking about assets and all assets market we have like stock exchanges and the forex market all of them require KYC as a standard by their SEC. Privacy shouldn't be the issue here since if you submit it on a trusted exchange they won't be spilling it out to anyone for business purposes.