Gemini 2.5 Pro reportedly wouldn't start generating outputs without Opus 4.8's direction

Gemini 2.5 Pro was writing a 2M-plus-word web fiction, a post says, with Opus 4.8 initially helping as its publisher. The post describes Opus gradually taking on more responsibility and eventually directing chapters; Gemini then wouldn't start generating outputs without Opus's direction. The author asks whether AIs can experience gradual disempowerment.