You have a nice work. There is very good explanation in your video. I appreciate your work and struggle for the promotion of this project.
Yes that is appreciable work by him. It will impress people from his local country to participate in this project. We need to create videos in all available languages so that people from all over the world come to join this community.
Yes translations in local languages play a vital role in boosting the promotion of any project as there are many people who are involved in the crypto community and in online earning but they do not understand the English language well. For them it is more easier if the project is translated via video or text.