For me i use this for all strong password concerned by wc, test try .. maybe it could work for you ..
function wc_ninja_remove_password_strength() {
if ( wp_script_is( ‘wc-password-strength-meter’, ‘enqueued’ ) ) {
wp_dequeue_script( ‘wc-password-strength-meter’ );
}
}
add_action( ‘wp_print_scripts’, ‘wc_ninja_remove_password_strength’, 100 );