Normally I don’t like to show the author and the date of a post, but the Google Search Console would prefer it. Do you know if there is an option to provide Google these information while it is hidden to the user?
Do you maybe also know if it’s possible that the current date is always the post date (or s.th. like current date – 1 week/month) ?
Technically you could use CSS, but I don’t think it’s a great idea. Google frowns upon providing information to them and not the user, as things should always be user based.