the link is about removing the transparent ledger(the blockchain(7 years of historic data)).
sorry but removing the blockchain out of bitcoin and instead only handle "unspents" is totally ridiculous.

it ruins the "trust" and security that bitcoins cannot be"created" by any other method.
it ruins the security, simply because each block is created with details of the last block. by removing "blocks" then that removes the security.. thus making it easier to fake new data.

the other point is about hiding values of transactions..
this is also a overall risk because if you cant see the amount someone had. you cant validate what you received is real or not. (bitcoin counterfeiting risk)

even if they did remove the history of bitcoin data and hide values of transactions publicly so no one can analyze the history. they can still analyze current data and anyone watching a person in particular will still be able to get information about them.

the easier solution is just to move funds to a new address and then anyone watching you doesnt know if its still you or someone else you made a payment to.

the issue has never ever ever been about bitcoin. but about humans stupidity to make their bitcoin addresses associated with identity
take the guy above named "european central bank" - here is his bitcoin address: 1ALjht7sumDJbbEccjgKkr1cq4zNhRxiB9

it did not take any blockchain analyses to get that info, i did not need to ask him, no one needed to coerce him..