Your interpretation also disagrees with the interpretation, and explicitly stated goals, of RethinkDB itself:

https://rethinkdb.com/faq/

> The RethinkDB server is licensed under the GNU Affero General Public License v3.0. The client drivers are licensed under the Apache License v2.0.

> We chose to release the client drivers under the Apache License v2.0 to remove any ambiguity as to the extent of the server license. You do not have to license any software that uses RethinkDB under AGPL, and are free to use any licensing mechanism of your choice.