I worry about ports of GUI tools, or even whole GUI toolkits like GTK+. We gain nothing by having popular Unix apps like (say) GIMP available on AROS. No matter what the quality of the port, the fact remains that an application will always be more stable and better supported on the platform it was specifically designed and implemented for. If all we have are ports, then there's no compelling reason to run AROS - Linux can do it better.
I think he is making good point although I'm sure nobody would object if GIMP was ported to Amiga (AROS or something else).