• “AI should serve as a scaffold for cognitive construction rather than a substitute.”
• “...the teacher’s role is shifting from knowledge transmission to instructional design and behavioral facilitation… Teachers must develop digital literacy and data fluency while acting as safeguards against over‑automation, ensuring that human judgment and educational values mediate AI adoption.”
• “...while AI offers efficiency and feedback advantages, traditional teaching remains essential for tasks requiring cultural interpretation, discourse depth, and emotional connection. A blended model—AI for repetitive or procedural tasks and teachers for critical discourse—appears most effective.”

This study explicitly does not advocate for replacing teachers with AI, and repeatedly cautions against doing so

These findings highlight both the promise and the limitations of AI in language education, underscoring the importance of teacher facilitation and thoughtful design of human–AI interaction to support deep and sustainable learning.

The problem is there's no teachers in this scenario, at least that's my understanding