> All this talk about better graphic cards does not matter,
> when there is no software using it. Not even partly.

Indeed, the low-level software (i.e. drivers) for them is missing.

> If you want some 300€ card for your 900€ computer, then do it.

GCN1-based cards can be purchased new for just under 100 EUR. GCN4-based cards start at 120 EUR.

> It is just important that the driver is happy

It must exist before it can be happy :-)

> This is like the old Amiga problem.

I don't think so. My impression is that MorphOS users who would like to have (3D) drivers for newer and better graphics cards also want to use software that makes use of them.