As of airflow 2.3, airflow hooks no longer need to name extra fields with the `extra__conn_type__field_name` convention (PR https://github.com/apache/airflow/pull/22607).
I believe using the short name is much more intuitive and user-friendly. So I am currently working on updating our hooks so they can be used without the prefix (of course maintaining backcompat). This will achieve consistency of interface and will make it so users, when following existing practices to add new custom fields, will not incorrectly think that they need to use the prefix. I have opened up a number of PRs doing this for most of them, though there are a few remaining and work continues. I just wanted to bring it to the attention of the group for transparency.
