They probably view and treat their web app as just another API client, just like how you could be using any of the native Mastodon apps for various platforms, c

They probably view and treat their web app as just another API client, just like how you could be using any of the native Mastodon apps for various platforms, consuming the same API as the others. It's not a crazy way to do things in 2023, especially for a resource constrained development team and when operations costs is a concern.