Yeah, it doesn't make a difference for me. It's the generation part. Gowers should have sent his prompts to the colleagues, not the generated paper. That's all. I feel like it's creating obligations for others to help with the remaining 20% which always takes the most time, while you get to have all the fun of doing the first 80%.
I'm not criticising Gowers directly in this instance because he's exploring the possibilities, my disdain is towards the more general pattern I see emerging where people just send each other LLM outputs.