I reached the Space Age victory screen but still don't have Iron Throne 2

Going by the global stats, I imagine this is unusual.

Also, what are you guys doing with all that iron? If it all went to science you could clear the tech tree in speed run time.

or rather, science production rate isn't even the bottleneck. I was researching zero things the majority of the time, and spent much of my time doing things that didn't really advance towards the end, and still had a pretty average clear time at 168h