Bulgarian thread only has 9 pages since it's conception in 2012, so probably not worth it for that.
Well, as our dedicated language "corner" is a single topic, it is not quite amazing that is is undeveloped. A lot of the Cryptocoin enthusiasts in our country do not speak very well english. Therefore, they have to jump into alternative forums due to the lack of understandable information or rely to friends to help with translation. I hope you agree, that the current format (single topic) is quite uncomfortable not only for us, but for the other "single-topic" language users.
many will do it for the bounties
I don't have the impression that the other translations are "pro bono"

Anyway, if the dev of the coin agrees to pay for that translation, I don't see a reason that deal to be interfered by any form of authority.
Imho, it is a discriminative to restrict any translation just because the forum administration consider a language as "irrelevant". And "irrelevant" because the users of that language haven't been given with equal to other languages conditions to develop their language section. If the translation has been placed in wrong section, it is totally agreable to be deleted. BUT... there is no section, where these translations are allowed. This is a kind of Catch 22.
All this inequality is not in a benefit of the crypto community and definately does not help for the popularisation of the ideas behind the crypto currencies. Well, at least by this forum.
We aren't trying to limit anyone from talking about an altcoin, we're trying to limit the altcoin spam in Bitcoin sections
Altcoins exist and their market share is growing. So dedicating a space for them will decrase the spam in the BTC sections.