I have experience with the Apple review process. It's very common for an update to not respect rule X since there are literally thousands of rules. First you c

I have experience with the Apple review process. It's very common for an update to not respect rule X since there are literally thousands of rules. First you can appeal/answer them (like you did). In the scenario where they still reject your update you can still make a new executable by bumping up the version identifier. Try to make some change that answer their previous objection. In this case I would add/change a line in the description or title of the app specifying is for blind users. You could modify the feature to their demands but I'm not sure it applies in this case. Then you submit again. You will get a new human reviewer which may have a different opinion from the previous reviewer who rejected you. Be kind and respectful but keep appealing/resubmitting/explaining/asking what you can do. Don't give up. It's very time consuming but usually you will always get meaningful updates published in the end.