I'm kind of surprised that postgres was quite that dominated by mongodb back in the day. I remember the mongo fever, but I always thought postgres held reasonable market share. I guess it was other SQL dbs back then, I guess MySQL was still viable.
I worked on many projects that had used wrongly mongo instead of ordinary relation database and they needed rework in time. It was just hyped in it's days. Like micro service architecture in few years.
It could be that Postgres was so popular that people didn't really discuss it.
Hyperbolic example; literally every human reading this consumes oxygen nearly every moment of the day, and as such no one talks about how great breathing is.