Earlier quoted context omitted.
The particular benchmark seems bullshit, too. For postgres they seem to intentionally use the less performant json column type instead of jsonb. Not that I can verify it, because the code in the linked public "No magic, no tricks – check the code and make your own tests!" repository doesn't match the published results and doesn't even work at all with postgres… EDIT: Okay, they pushed a new version containing the Pos…
And despite that Postgres destroys all the other solutions at everything other than the non-sync (lol) single write case and graph traversal. If anything it just proves even after almost a decade of these "NoSQL" solutions being around they still can't compete even on basic queries with Postgres which is a fairly conservative SQL solution.
In other words: I wouldn't call a screw driver a bad tool, just because it's not as good at driving nails into wood as a hammer.