Mastodon API counts deleted accounts

How to reproduce

Create a user. The user_count found via /api/v1/instance will then increase by 1. (e.g, from 2 to 3)

Run mix pleroma.user rm username, the user_count does not drop back down after the user has been "deleted".

Expected behavior

The user_count returned by the mastodon API should drop by 1 when a user is "deleted".

Running rm on a user seems to only set info -> deactivated to true after deleting all of the user's content. As such, the mastodon API cannot tell the difference between an account that has simply been locked, and one that's supposed to no longer exist. I assume they remain in the database to prevent immediate reuse of the username, but it still leads to a skewed user count the way it's currently marked, or how the mastodon API reads the database entries.