Older houses didn't have those issues, but energy consumption and humidity regulation were nightmares.

Removing drafts created and solved many difficult engineering problems.

I think having a tightly sealed house with lots of openable windows is a good solution. Most days, you can hopefully leave the windows open during the day and/or night. On smoky/hot/cold days you can run filters and ac/heat.

In some countries, it's common to open all the windows for 15-30 minutes, even on really cold/hot days. There's basically no thermal mass in the air (vs. the contents of the house), so it uses much less energy than you'd expect, and the house returns to temperature quickly. However, it greatly reduces indoor air pollution (by roughly an order of magnitude), including dust and pollen.

You could get a similar effect with an air exchanger, especially in Alaska, like in your link.

However, those don't usually do much to help with humidity entering/exiting the house, which is the main drawback of opening the windows for 15 minutes.

2000W sounds like a small amount of energy until you realize modern heat pumps have coefficients of power between 5 and 10. So, that house could leak 10-20KW of energy on average, and still meet the 2000 watt goal. (Assuming they installed a heat pump, which they should have before paying for ultra high end insulation.)