Persons who don't use English as first language should write freely in their own and use a translator with English to gain readers.
This might work for major languages (that do not need the English version to have a shot at decent reach in the first place).
There are a few people that post bilingual in #cesky and the WTF moment can come as early as the headline. I can read the Czech version and laugh at the literal translation. You can just keep shaking your head.
It might be manual translation, not much difference. You do not need to thrill the entire world, you need to find your audience.
If translators are that bad, possibility of message being completely lost in translation, I totally agree with keeping within communities where same language is used.