无用之用 ☯️ 🐋 ⚧️ 
Today I learnt how to deactivate all AI features from Jetpack on Wordpress, so I've decided to share it in case someone's interested.
Simply add this line of code to the file functions.php of your site's theme or child theme:
add_filter( 'jetpack_ai_enabled', '__return_false' );
It works like a charm!