Actually the site definition or title is
Proposed Q&A site for linguists, teachers and students of the Arabic Language
I'd add (native or fluent) speakers in this definition.
Of course as Arabic (i mean standard or fasih Arabic) isn't widely practiced language and these days has reached the level of "latin" one could discuss whether "native speaker" is the correct definition. But I guess none or only few of us are teachers or linguists!
I hope for helpful contributions!
Proposal: Arabic language (اللغة العربية)