All Armbian images are tested on real hardware. At least for booting, recently also for performance. Most of freely available Linux doesn’t get this luxury.
We know why they don’t work and that is written on the download pages: Rockpi 4 - Armbian
“How to solve boot troubles with SPI enabled boards? (variant 2)”
Did you try that?
It is not Armbian’s responsibility that SPI bootloader shipped with the board is not capable to boot anything but their creations. They made a mistake, which was fixed later. But you can’t fix boards that were already shipped out.
If you have any specific questions and problems with Armbian, make sure to follow support terms:
I don’t know what Radxa (or other hardware seller) do with their customers emails, but we (Armbian) are forced to reject personal technical questions on the spot since it is not possible to cover the costs of this constant email flow, covering extremely expensive education in person, when project is making no income. I think hw sales profit margin is also not possible to cope with it. We have forums here, there … and this problems is also in a few posts.