Is Peer-to-Peer replication designed only for scaling out reads. Is it bad to use P2P as an update anywhere topology.

Statement: P2P is designed to scale out reads, although many people wrongly use them as an update anywhere topology.

Is this statement saying if my subscribers will be doing a lot of writes I should use Merge replication instead of P2P replication. Question: Under this statement, why is it bad to use P2P replication, please elaborate? What will happen. Will servers lock up every week on me or something such as that.

Thanks,