Usually things become complex once something isn't going as planned. Like if your database slows down because the pods get scheduled on a weird node with some n

Usually things become complex once something isn't going as planned. Like if your database slows down because the pods get scheduled on a weird node with some noisy neighbour, your backups failed because the node went down or other more hidden issues that take a lot longer to debug compared to some Postgres running on a normal compute instance somewhere. It's just additional layers to dig through if something goes wrong, if everything works even the most complex systems are nice to operate so I wouldn't call it less complex just because someone wrote a nice wrapper for the happy path.