Disabling Marketplace Suggestions Programmatically

For those who prefer to programmatically disable marketplace suggestions that are fetched from woocommerce.com, add the woocommerce_allow_marketplace_suggestions filter to your theme’s functions.php or a custom plugin.

For example:

add_filter( 'woocommerce_allow_marketplace_suggestions', '__return_false' );

This filter will completely remove Marketplace Suggestions from your WooCommerce admin.