Erroneous module installation requirement

I tried installing subscriptions on a fresh Drupal 6.3 install, and even though I have activated all the recommended modules, the admin pages tell me that I need to install modules:

Note: For standard Subscriptions functionality you need to enable the following modules:

* Subscriptions UI
* Subscriptions Mail (requires Mail Editor for customizing the templates)
* Content Subscriptions
* Taxonomy Subscriptions

Reading the code, it turns out that it also requires html_to_text to be installed, even though that's not part of the message. Trying to get html_to_text for 6.x, I realize it's now a drupal function. The subscription module appears to use this function in one place, so should the requirement for that module be removed?