By adding a new committer and removing the original committer can I effectively change ownership of plugin? I would like to transfer a plugin to a new wordpress.org profile. I am the author.
It will effectively change the ownership, though it will still show up in your profile if your old username is listed as a contributor, and may still show up in your profile if your old username was the creator of the plugin. To fix the second part, email firstname.lastname@example.org and Otto42 or I can re-assign it.