What you're pertaining of which deleting blocks or any records in the ledger is not a blockchain anymore.
Why any transaction dont include the final balance of each address?
If you can click the address and view its all balance and transaction data then there's no need to do that.
like Craig Wright said, the best protection for anonimity is to much data generated like gigabyte blocks.
yes, the best way of remaining anonymous according to Craig Scammer Wright is to always connect to NSA and report all your activities down to every detail willingly

because that is where we land with big blocks, a handful of nodes run by NSA which you have to connect to.
Well, apparently.