They just corrected the galaxy model and broke things in the process.
That's an understatement. The bounty-issuing authorities who no longer control any stations, star-positions-to-star-data mapping, ship locations and commander docking assignments, all of this... it could have been discovered with a simple, routine, automated data-integrity check before pushing to the live servers.
These are all newbie software developer mistakes. Frontier is in full control of their finite number of servers, with direct and at-will access to their databases. They can check for all these sorts of issues and cut down drastically on adding new problems to their list if they'd just perform the necessary due diligence.