I'm a normal user so my words won't be that useful. If you like what I say, give it some thought. Translation is not bad, you can learn a lot in your native language by translating (because not everyone can be proficient in English). Because there is no end to human learning?, so all the local boards that have bad comments about the translation, ban the translation on those boards. Also make translation free on other native boards that would be the best strategy/justice.
Buddy, what you are proposing here is wrong. You can't ban translation just because of some fraudulent translations. The author could make a rule that "new members won't be accepted for translation". Also, all the local boards have very senior members. They can review the translations before they are accepted. That way, unqualified translations would be less.
The OP made the post because our local board/thread (Bangla) had some fraudulent translations. But if you look closely, you'll find many good translators in our Bangla community. We also have a DT member, Little Mouse. We have good members, like Learn Bitcoin and Crypto Library. These members can review those translations before they are posted. So yes, as you can see, banning is not the solution.
Read all the pages. Other members have already given the solution. Especially the last commemt by 1miau.
