Thank you, that makes sense. I'm happy that Armbian images works for m2s, because original banana pi m2s images are super limited (most of wifi adapters not working, as well as touch screen, sound etc.). Plus there are errors/bugs in bananapi official images, that are not updated for a long time.
Armbian has improved significantly during recent years, a lot of things work out of the box. And I was surprised how stable it is.