Haha, well, I won't start an argument given your affiliation, but let's just say that most BI tools CLAIMED to be able to integrate with Mongo well, but in the end, we ended up dumping the data into SQL for the BI tools. This was 4 years ago, and we tested about 5 major BI providers and were willing to pay them ridiculous sums.

With that said, I enjoy Mongo, for its specific use cases.