Everyone else in the team is now just aware of what's happening, and understand the architecture from the meeting to review / discuss it. But implementation and rollout is fast and just by the 2 of them.
The lead told me maintaining the quality was so much easier for the 2 of them with the right AGENTS.md lines, as he didn't have to spend time fixing guiding many people to do the right thing in PR reviews.
The closest I can explain this phenomenon to thos who are surpised was by the LLM variance section in this recent blog post: