Author of the blogpost. Thank you for your feedback. The problem with hardware choice, is that many selfhosters have really low-power, budget, powersaving hardware, including myself. The point of this article was for me to discover how I could move some of my data away from Google, of which this is one piece.

I had this running on a Raspberry Pi 4 in this blogpost, which functioned just fine; although only with one user and little apps installed. I might do a follow up when I have used Nextcloud more extensively and explore different hardware options.