Yeah, I spent 0.32 BTC ($31K) on 6 ozs. of loose leaf tea back about 10 years ago...the tea shop was the 1st place to spend BTC in my area....I thought it was “cool” to buy some tea that way! ;-)
BTC can be essentially anonymous if you are careful/smart about it...fresh BTC wallet (BTC “Core” wallet) downloaded via TOR if super paranoid...fund the new wallet with BTC that has been “coin-joined”/”bit-mixed”/”whirlpooled” i.e. (the new “Ashigaru” project), then NEVER use a unique wallet address more than once. Also definitely no use of exchanges like “Coinbase” that require “KYC”. Not sure what you mean by “a wallet ID”, your private key is private by design...the only thing exposed to the blockchain are “UTXO’s”/public keys and if you haven’t associated those to any of your personal info. by the above “bad habits” then your “ID” is just a long string of random #’s not associated to any person or place. And if you only use a particular wallet address once (you can generate as many of those as you want from your BTC wallet)...Blockchain analysis will be stymied at the one transaction level.
By wallet ID, I meant your wallet address. Yes…that can change with every transaction. And I agree, your private keys are private.
I was trying to “dumb it down” a bit.
Coinbase sucks. Avoid them at your peril...