I think if you compared it to other databases that are designed to scale horizontally like Cassandra and DynamoDB, you might have a more favorable opinion. IMHO

I think if you compared it to other databases that are designed to scale horizontally like Cassandra and DynamoDB, you might have a more favorable opinion. IMHO, most products at this scale are terrible in different ways, because it is a difficult problem to solve generally. I have been responsible for <100 clustered Cassandra instances, and <500 clustered MongoDB instances, and I would choose the latter every time.