I've learned people imagine nerfs just so they can complain about something. One benefit of having the game data in version control is I can look up anything to see what changed, and 99.9% of the time someone cries "nerf!", nothing did. To be fair, sometimes they're right to complain but their conclusion is wrong, and the problem is not a nerf but a bug or change to another system.
Games are extremely complex - often the most complex software that exists - and they have many interconnected parts; changing any part, whether for fixes or enhancements, can have sometimes unforeseen consequences for seemingly unrelated systems.
