BuddyPress.org

Hi,
So i have this script in my /plugins/bp-custom.php file (see below). I was wondering if it is possible to exclude new posts, from posting them on the activity wall, for a certain category. So that (i.e.) new posts that are posted in category_id 2 are not posted on the wall.

Any ideas on this?
Here is my script:

<?php
//Listing activity support
function customize_page_tracking_args_listing() {
    // Check if the Activity component is active before using it.
    if ( ! bp_is_active( 'activity' ) ) {
        return;
    }
 
    // Don't forget to add the 'buddypress-activity' support!
    add_post_type_support( 'listing', 'buddypress-activity' );
 
    /**
     * Also don't forget to allow comments from the WordPress Edit Page screen
     * see this screencap https://cldup.com/nsl4TxBV_j.png
     */
 
    bp_activity_set_post_type_tracking_args( 'listing', array(
        'action_id'                         => 'new_listing',
        'bp_activity_admin_filter'          => __( 'Post added', 'custom-textdomain' ),
        'bp_activity_front_filter'          => __( 'Post', 'custom-textdomain' ),
        'bp_activity_new_post'              => __( '%1$s added a new post called <a href="%2$s">[post]</a>', 'custom-textdomain' ),
        'contexts'                          => array( 'activity', 'member' ),
        'comment_action_id'                 => 'new_listing_comment',
        'bp_activity_comments_admin_filter' => __( 'Commented on', 'custom-textdomain' ),
        'bp_activity_comments_front_filter' => __( 'Comments on post', 'custom-textdomain' ),
        'bp_activity_new_comment'           => __( '%1$s commented on <a href="%2$s">a post</a>', 'custom-textdomain' ),
        'position'                          => 100,
    ) );
}
add_action( 'bp_init', 'customize_page_tracking_args_listing', 1000 );
function new_listing_include_post_type_title( $action, $activity ) {
	if ( empty( $activity->id ) ) {
		return $action;
	}

	if ( 'new_listing' != $activity->type ) {
		return $action;
	}

	preg_match_all( '/<a.*?>([^>]*)<\/a>/', $action, $matches );

	if ( empty( $matches[1][1] ) || '[post]' != $matches[1][1] ) {
		return $action;
	}

	$post_type_title = bp_activity_get_meta( $activity->id, 'post_title' );

	if ( empty( $post_type_title ) ) {

		switch_to_blog( $activity->item_id );

		$post_type_title = get_post_field( 'post_title', $activity->secondary_item_id );

		// We have a title save it in activity meta to avoid switching blogs too much
		if ( ! empty( $post_type_title ) ) {
			bp_activity_update_meta( $activity->id, 'post_title', $post_type_title );
		}

		restore_current_blog();
	}

	return str_replace( $matches[1][1], esc_html( $post_type_title ), $action );
}
add_filter( 'bp_activity_custom_post_type_post_action', 'new_listing_include_post_type_title', 10, 2 );