These are some valid concerns. I think, translations are getting better as algos are getting improved with time. Condition of paid translators is far better than the free ones, lie Google tranlator.

For many languages, these translators works best and poorly for some, though. I haven't used "Zero" yet, so I won't be able to comment on the translations' quality, I hope, this would match their high standards in the technology, though.

Wish you a lovely day.