Gog games are also digitally signed. So you can check the signer and know it hasn’t been tampered with.

Is there a difference between networking approaches?

With rootful podman containers the only difference I noticed is that bridge networks aren’t isolated by default.

Why would you need to reconfigure the port mappings?

Exactly. Torrents are popular because of the moderation and curation the indexers perform. It’s why it essentially won over purely distributed competitors.

It won’t take much to create some fake swarms that make this tool useless.