Well I did a restore a couple of weeks back when an update broke my instance (to version 30 I think and I was still on 28 while I had to update to 29 first). My Nextcloud is fully dockerized with docker compose, but my knowledge with PHP did helped me a lot to restore the instance. But in general to me it’s pretty impressive what Nextcloud is doing with that PHP codebase. But if you would build the today from scratch, I can imagine there are better languages which will do the job.