To what extent are 'lost data' criticisms still valid of MongoDB?

Question

To what extent are \'lost data\' criticisms still valid of MongoDB? I\'m referring to the following:

1. MongoDB issues writes in unsafe ways b

Answer 1

As of February 2017, the most recent Jepsen analysis of MongoDB suggests that data loss was possible in all versions of MongoDB up to MongoDB 3.2.11 and 3.4.0-rc4.

So at the time the question was written (2012) the answer should've been yes, those criticisms were valid from theoretical perspective. But it looks like customers don't care about the theory. As RethinkDB fail has shown, correctness doesn't matter. The only thing that matters is time to market. Very sad.

As of Oct 2018, On MongoDB 3.4 - This is still an issue.