This template is set to “after post title” for all posts and I was wondering if it could also be used in the Read Further menu (Customizer > Layout > Blog > Archives) for better consistency. That would be great!
in the Block Elements Display Rules you can add additional Locations. Blog for the Blog page and one for All Archives or any specific archive you require.
Yes, you understood correctly! I just did not realize that there was such an option: very clever indeed! GeneratePress is a real gem and I am certain that there is so much more just waiting to be discovered.