BuddyPress.org

I had the option Allow activity stream commenting on posts and comments disabled I also have some code in custom.php file. I am not sure if it could have any effect

/* Disable comment for all activity but still enable @mention autosuggestion. */
function disable_activity_comments($can_comment, $activity) {
    // Disable comments
    $can_comment = false;
    return $can_comment;
}
add_filter('bp_activity_can_comment', 'disable_activity_comments', 10, 2);

/* Hide comment from activity page */ 
add_action( 'bp_after_has_activities_parse_args', function ( $r ) {
    if ( bp_is_activity_directory() || bp_is_single_activity() ) {
        $r['display_comments'] = false;
    }
    return $r;
} );

// Exclude activity updates from subscribers who are not logged in on the activity directory page.
function hide_new_member_activities_from_unlogged_users( $args ) {
    if ( ! is_user_logged_in() ) {
        $args['action'] = array(
            'activity_comment',
            'activity_update',
            'last_activity',
            'new_avatar',
            'new_blog_comment',
            'new_blog_post',
			'new_classified',
            'updated_profile'
        );
    }
    return $args;
}
add_filter( 'bp_after_has_activities_parse_args', 'hide_new_member_activities_from_unlogged_users' );