I was part of a team that operated a large Mongo cluster for most of the last decade. I would not have advised anyone to use Mongo as their durable source of truth database then, and I still don't think it's advisable to do so now. On numerous occasions, Mongo demonstrated the consequences of poor engineering judgment and an addled approach to logic in critical components responsible for data integrity. In addition, Mongo internalized many poor patterns with respect to performance and change management. Mongo did not, and does not provide the data integrity or performance guarantees that other databases internalize by design (the WiredTiger transition helped, but did not cure many of the issues).

PostgreSQL introduced JSONB GIN index support sometime around 2015, making Postgres a better fit for most JSON-based applications than Mongo.

My issue isn't with people not liking Mongo. It's with contentless meme posts. Your post has real information that adds value to the conversation, and I appreciate that you took the time to write it out.