I never said “so big” Wil. All I said was, and I quote:
"Now, I don’t really have a problem with “rounded hulls”, other than the fact that building them will take more time and cost much more than “straight” ones, mostly in labor.
Assuming the same construction method (steel reinforced concrete) bending rebar, frames, beams, bulkheads, etc. to rounded design specs it’s a precision, time consuming labor. Also, the whole rounded structure will have to be a continuous concrete pour, no way around it.
On the other hand, the “straight” structure could be built completely prefab, at any LOA. Much cheaper."
There is also the case for degree of modularity and “ease of rafting up” when choosing the shape of those “seasteading modules”.