But, to have only the final part of the no, is it viable for the person to obtain the same confidentiality or privacy?
In terms of privacy, yes it has the same level of privacy as a non-pruned node.
Both non-pruned and pruned node start to verify and download from height 0, the only difference is how those store the blockchain.
One keeps full and the other deletes the old blocks.
Even if pruned node only saves N number of blocks, it still verified ALL the previous blocks that it downloaded (
and deleted).