I don't know how his basement rack looks but they are continuing slowly eliminating old architectures with almost no surviving hardware or that are unsupported by Clang. Loongson was eliminated in this release.
I don't know how many users of luna88k there are, I don't frequent anywhere near the same ecosystem they would, but have never seen one, So from my point of view it is one person making releases for himself and I love that dedication. I don't have, nor do I want a luna88k, but it great that it exists.
So as far as I can tell that is all it takes to have a published obsd port, one person willing to put the work in.