woo fields not required

add_filter( 'woocommerce_default_address_fields' , 'fx_free', 99999  );

function fx_free( $fields ) {
    
     $fields['address_1']['required'] = false;
     $fields['address_2']['required'] = false;
     $fields['city']['required'] = false;
     $fields['state']['required'] = false;
     $fields['postcode']['required'] = false;

     return $fields;
}

# These seem to stick as the array $fields shows the following for billing_states 
# and the required is gone from the checkout page :

 [billing_state] => Array
                (
                    [type] => state
                    [label] => State
                    [required] => 
                    [class] => Array
                        (
                            [0] => form-row-wide
                            [1] => address-field
                        )

                    [validate] => Array
                        (
                            [0] => state
                        )

                    [autocomplete] => address-level1
                    [priority] => 80
                    [country_field] => billing_country
                    [country] => AU
                )