I agree but until then the following code snippet can be applied to a batch of sites via ManageWP’s code snippet feature. Just add in your key and bulk apply to all sites.
<?php
$save = array(
'key' => "ACF_LICENSE_GOES_HERE",
'url' => home_url()
);
$save = maybe_serialize($save);
$save = base64_encode($save);
update_option('acf_pro_license', $save);
?>
