breaks alternative authentication

The google-analytics-for-wordpress plugin includes the pluggable.php which creates the function wp_authenticate.
The alternative login plugin wpDirAuth (this may be just one of many) requires wp_authenticate to be still overwritable.
google-analytics-for-wordpress seems to load first, no matter what.
Since the plugin load order is out of scope for the user, is there another way to achieve whatever gets achieved with pluggable.php?

https://wordpress.org/plugins/google-analytics-for-wordpress/