Yeah, there is. PG has its own warts that Mongo does not have. Also the JSONB query language sucks. See appending an array in PG [0] vs Mongo [1]. Also PG does not provide a way to atomically append to the array, you have to lock the row via SELECT ... FOR UPDATE. Mongo's $push, $set, etc, are atomic.
[0] https://pastebin.com/v2MiV8PE
[1] https://pastebin.com/RmLuGzAY