Sorry - but I'm not chasing you down all these extra rabbit holes.
That house - still running just fine after 70 years - would exceed most NZ regs (probably all of them).
We are a hell of a long way behind the rest of the world in house design.

I mentioned it only to prove that a properly designed & built 'wall of windows' was far from a disaster - in conditions so extreme that not a single NZ house faces anything like it. 

Trying to keep this vaguely on-topic... windows... I built a new house in Auckland over the Covid period.

I brought the windows in from Germany - via a small firm in Hamilton that specialises in NZ Passiv houses.

I almost had to pay extra to get them double-glazed - the Euro standard is now TG (triple glazed).
I did the calcs and the minimal difference in heat loss and gain (in Auckland's temperate climate) was not worth TG's downside of extra bulk and mass of the moving (opening) bits.
Had I been in Wanaka, I might have gone with TG.

I mentioned IR films in my first post - to counter solar gain - and you pooh-poohed films as not being effective against heat loss from the building.
Which was irrelevant - solar gain comes into the building as IR.    

Having lived with my DG windows (in this new house) for 3 years, plus 20 years in my old DG house in Auckland and 20+ years in the Canadian DG house...
Having done all the thermal calcs for the insulation, heat flow and central-heating requirements (for both NZ houses).
I can only conclude that you don't know as much about windows and thermal engineering as you believe.