> So we watched beginners put their data with no schema, no consistency, and broken validation in a big bag of blobs. The projects fail in mass.

source? although I was also a mongo hater at the time it was being hyped, I've yet to see anything concrete that would show this technology choice made a company more likely to fail.

over time, I've actually come to believe that tech choice is one of the least important decisions in terms of impact on a company's market success. which makes me not care so much about fads either way.