This is a follow up to my question in Can I change the Display Settings by modifying the database? which was answered. Basically, I could not get to the 'display authoring and date information' checkbox because of a module installed. Running the command 'drush cedit node.type.article' as given in @4k4's answer allows me to change this setting.
However, when a new content type is created, the type has
display_submitted: true set meaning I have to go in and change it whenever a new content type is created, which I sometimes cannot do.
Is there a way to change the default settings so that any new content type has
display_submitted: false by default?