FYI I’ve got a reply from Rabbit:
Thank you for reaching out to rabbit support. I appreciate your suggestion about having the rabbit r1 to respond in the target language with the corresponding voice and pronunciation, rather than defaulting to English. We truly value your feedback and are glad you took the time to share your thoughts with us.
I’ve noted your request and will be forwarding it to our team for consideration. If you have any other ideas or questions, please feel free to let me know.