Wrote about the backlash to GPT-5 and the dawning awareness inside labs of just how strongly some people feel about individual models and workflows https://www.platformer.news/gpt-5-backlash-openai-lessons/
change needs to be managed. People don't like to lose functionality when change happens.
And when the new system doesn't do what the old system used to do...you get reversion. Backwards compatibility is hard.
And it's a sign that the user is not the focus for OpenAI.