No, they are mostly abused by people that use machine translators to put minimal effort into their submissions, people that don't speak English communicatively, let alone on a translator level, looking for a way to make money on steem. And much, much more.
We fight abuse inside of our team and we believe that there's hardly any, if even any, abuse happening at the time when I'm writing this comment.
Okay, I got it. I hope the problem can be resolved soon. But I saw a moderator that posted translation contribution 5 times a day. I think you should limit contribution by same people to prevent exploitation.