The subject says it all. Here are the images to prove it's legit. Want to do this in person!

What is the best way to turn larger amounts of BTC into fiat currency so he can spend his money he has earned without getting the capital gains tax hit or without KYC and all that government bullshit? Or is that avoidable? Is his best best just moving the BTC from his wallet onto an exchange and then turning that into fiat back into his bank account? Are there any other options?

Thank you!