Analyzing crypto in your own language will be very easy so if you are new to crypto or coming from this forum be sure to be more active on discussion boards in your own language.
Promoting bitcoins in your own local language may encourage acceptance among members in your local group who are new to the forum.
English is not the native language in some countries that have their local board here, and some new members of the forum who are not very comfortable with expressing themselves in English and even reading it will spend more time in their local section where they will fell more comfortable among people with same language as their own. Having someone who shares and translates important topics to the local language of their country to share in their local group is good because those people there who do not visit other boards will still be able to learn from the important topics that have been translated to their local language for understanding and engagement.