That's my point. The GPL goes both ways. Wire release under the AGPL, sure. That means if you want to use it on your server you have to release the source code

That's my point. The GPL goes both ways. Wire release under the AGPL, sure. That means if you want to use it on your server you have to release the source code of any modifications. Of course you do. But they do too. It's open source, they accept contributions. Those contributions are copyright the contributors and licensed AGPL.