I have been using this since 2018. I have used on a Raspberry Pi and mostly Odroid. I have been on an Odroid XU4 for about 5 years now. I cannot express how grateful I am for the software selection, stability, the drive manager, and the backup feature.
The backup has saved me so many times. It is so flawless and just works. I like to tinker and mess stuff up. Even after having to reinstall from scratch, the backup gets me 100% to where it was just the day before I messed things up.
I am thinking about going to x86-64 as the XU4 does not really support any video transcoding, and JellyFin may no longer be supported in the future. But I want to try to stick with DietPi during this process.