Part of the issue is that what Rodger sees as his perfect boat may not be as well suited for other people's needs. For instance, that boat has a pretty small cabin with low headroom...which may not appeal to many other boaters. I doubt there is standing headroom in that boat.
Yes, of course, you are right. But what makes this boat out of ordinary is its somewhat wild and radical character. Look at this stability curve:
Look at the unexpected polar speed (for a center boarder):
You can even race this boat and beat most of same sized keel boats
Of course you are right about the standing height, at least for big guys:
But I believe that (like me) he would prefer to bend (or sit) than having an ugly boat with a big freeboard. Thats a choice of compromises.
This is not a boat for the conventional sailor, its a boat for the adventurous and sportive sailor, kind of luxury camper, a boat for living on the outside and sleep inside. Kind of a motorcycle, if the more typical cruisers compare to cars.
It is for all this that I like it. Guess that my tastes are not faraway from the ones from Rodger Martin. If you look at his Portfolio you will see that he has made mostly fast cruiser racers and racing boats. My kind of sailor, my kind of cruiser
and I know that as cruisers we are not mainstream, so ...you are absolutely right, this is not an ordinary boat, not a mainstream one and that's what makes it interesting.