That would do nothing but divide the forum and make some content exclusive/inclusive to certain folks only. English is the common and most popular language around for the area covered. If there were sub-forums specific to Mexico, Central/South America, Asia or Europe it would make sense to use local languages out there. AFAIK everybody that lives in US or Canada had English at school and uses (or in Quebec at least have an option to use) paperwork and documents in English. Why complicate something that doesn’t need to be complicated?
Next thing in line would be female hackrs quotas or something similar.
Google Translate. We have already seen several posters who said they used it to post and it worked just fine.
I have had full technical conversations with Japanese who don’t know a word of English (and I surely don’t know a word of Japanese) using language translation tools. Spanish is faaaaar easier than Japanese.