The article makes it sound like it's something to consider today (well 2018), that's why I think it's fair to see how well it satisfies modern requirements.

If you just need a simple key value store that stays on disk, it's fine.

requirements for what is the question. "modern requirements" doens't mean that much.

Without transactions the data can become corrupt in case power fails / the process is killed / the container is restarted.