If you base your technology decisions on what the current memes are on /r/technology, you're going to have that impression, sure. But in reality, no, there wasn

If you base your technology decisions on what the current memes are on /r/technology, you're going to have that impression, sure. But in reality, no, there wasn't a vote held in 2016 where we all agreed NoSQL was a mistake and we should go back to RDBMSs. The horizontal replication story in Mongo is just a different game. And because it's so reliable, that ends up being how you solve not just availability and scalability but also engine upgrades and config changes. I migrated a bunch of production transactional databases on Mongo Atlas from a GCP cluster to an AWS cluster, with zero read/write downtime, by just walking through simple cluster reconfiguration steps. Add some nodes in AWS... move the write master... remove some nodes from GCP. It was stress free and easy. The same trick with replication on Postgres was a nail biter every time we did it.