> A peer is a node, which is a client that validates all transactions and blocks in the blockchain.

According to the white paper, Section 5, a peer is a miner. That has not changed, regardless of attempts to redefine the paper. To be a peer, you MUST contribute proof of work.

Running a non mining node gives you a copy of the blockchain data that you can trust is valid according to the rules you used to validate it. It does not make you a peer.