Move Posts WIth Newest Comment to The Most Top of Activity Feed

<?php
function smquest_bp_activity_bump_comment_posted( $comment_id, $params )
    {
        global $bp, $wpdb;
        extract( $params, EXTR_SKIP );
        $activity_parent = bp_activity_get_specific( array( 'activity_ids' => $activity_id ) );
        
        if ( !$activity_parent = $activity_parent['activities'][0] )
            return;
        
        if ( smquest_bp_activity_bump_denied_activity_type_check( $activity_parent->type ) )
            return;
        
        if ( !smquest_bp_activity_bump_denied_user_check() )
            return;
        //be nice and save the date_recorded
        if ( !bp_activity_get_meta( $activity_id, 'bp_activity_bump_date_recorded') )
            bp_activity_update_meta( $activity_id, 'bp_activity_bump_date_recorded', $activity_parent->date_recorded );
        $activity = new BP_Activity_Activity( $activity_id );
        $activity->date_recorded = gmdate( "Y-m-d H:i:s" );
        if ( !$activity->save() )
            return false;
    }
add_action( 'bp_activity_comment_posted', 'smquest_bp_activity_bump_comment_posted', 1, 2 );
function smquest_bp_activity_bump_time_since( $content, $activity )     {
        global $bp;
        if ( !$bumpdate = bp_activity_get_meta( $activity->id, 'bp_activity_bump_date_recorded') )
            return $content;
        $content = '' . sprintf( __( ' updated %s', 'bp-activity-bump' ), bp_core_time_since( $activity->date_recorded ) ) . '';
        return apply_filters( 'etivite_bp_activity_bump_time_since', '' . sprintf( __( ' %s', 'buddypress' ), bp_core_time_since( $bumpdate ) ) . ' · ' . $content, $activity->date_recorded, $bumpdate, $content );
    }
add_filter( 'bp_activity_time_since', 'smquest_bp_activity_bump_time_since', 1, 2 );
function smquest_bp_activity_bump_denied_activity_type_check( $type )
    {
       $types = (array) maybe_unserialize( get_option( 'bp_activity_bump_denied_activity_types') );
       return in_array( $type, apply_filters( 'smquest_bp_activity_bump_denied_activity_types', $types ) );
    }
function smquest_bp_activity_bump_denied_user_check()     {
        global $bp;
        //all, super, wp_cap
        $types = maybe_unserialize( get_option( 'bp_activity_bump_denied_user_types') );
        if ( $types && ( $types['super_admin'] || $types['user_cap'] ) )
            {
                if ( current_user_can( $types['user_cap'] ) )
                    return true;
                if ( $types['super_admin'] && $bp->loggedin_user->is_super_admin )
                    return true;
                return false;
            }
        
        return true;
    }