There are recorded cases of real regressions, but they're better characterised as incidents, not nerfs, e.g.: https://www.anthropic.com/engineering/april-23-postmortem

Btw, you have a typo in the twitter handle on your profile (not in your comment), 'thesilencesturns'.

You are correct, I softened the wording a bit. And thanks for the heads up on the typo!