Well, a very long time ago, I tried plenty of distributions on old hardware and that worked enough, so I could at least boot. But yeah, older hardware was always easier for Linux.
At some point I switched to the ones, which are most likely to succeed. Ubuntu is the biggest one out there and should work the best, with the most support and acceptance across the globe.
If not even Ubuntu works on those devices, then what will work, out of the box?
Besides, Ubuntu has already diverted enough from Debian, that I wouldn’t really put them in the same basket, at all, anymore…
The day Docker works on Android, I’m settled.