Because of the European GDPR I have to get the consent of a user via a click to show the embeds. The free plugin "Embed Privacy" (https://wordpress.org/plugins/embed-privacy/) does this very well.....as long the embed link is insert via gutenberg.
Is there a way to make the output from the metabox oEmbed field compaible with this?
I've tried to install this plugin on my local site, look around the code, and see that it does not support replacing the Meta Box output field with the privacy content. You can try to contact the plugin support to ask for adding a filter hook to modify the output of the Meta Box field. Refer to this documentation https://docs.metabox.io/filters/#rwmb_the_value