I don't think Steem has any philosophy for that. Steemit themself only just recently supported multiple languages.
Steem can't handle localized content very well. There is no way to store the language or query by language. On Steemit most user post in English, that's why you don't see the problem. If suddenly people would post more in different languages, Steemit would have a problem as well.

I never said I don't want to support multiple languages, just that dMania can't handle them atm. It would destroy dMania at its current state. That's why people should post in English for now.