Because one of the original developers of Windows NT hated bees. So the developer who was responsible for the registry snuck in as many bee references as he could. A registry file is called a “hive”, and registry data are stored in “cells”, which is what honeycombs are made of.
https://devblogs.microsoft.com/oldnewthing/20030808-00/?p=42...
https://tailscale.com/kb/1369/taildrive