@cwsmith even with better #Drupal core support for ActivityPub, this is still a great idea because of the number of sites that don't want more accounts in their CMS db. Even a feature like Webform presents a challenge during a large upgrade. While increasing the cache time for a reverse proxy edge cache and communicating the window for the upgrade to content editors, you can make large changes w/o impacting anonymous users... except features that can't be chached like Webform.
@cwsmith the fact that I can find & participate in the conversation though so many federated channels is both amazing & confusing. I originally saw this on an Mbin instance. Was initially confused about needing a NodeBB account. Now that I've looked at the moderation features of NodeBB, I'm even more interested in your original idea... a NodeBB integration w/ #Drupal that would allow comments using authentication outside of the CMS w/ some amazing moderation features & ActivityPub support.