Bitcoin addressee are used for making transactions, the addresses can be tracked but it can not be linked to he owners if the owners are making use of bitcoin as a privacy coin without making use of custodial and kyc means for dealing with bitcoin. People like to be private when dealing with bitcoin, so you can not link many bitcoin address to their owner as they are pseudonymous.
If you are talking about bitcoin addresses that accumulated the coins when mining was not a big deal then it is true, but now if you are spending huge amount of money then you need to verify your documents and there will be a procedure to invest huge amounts and all of those investment comes through banking transaction and hence everything is transparent.