20 * 365.25 = 7305 days. Assuming their "near a million buildings" number tracks to somewhere around 950,000, he would have had to build 130 "structures" a day on average.

This is all round and not precise numbers, considering he had to have days where he couldn't build, I'm guessing on the number of structures, and he started in 2004 (22 years ago), accuracy is not possible. But still, even if we fudged it down to 100 structures a day: This is BONKERS.

The man has a prodigious skill at building simple models and painting them. I am incredibly impressed. And I am curious if he did it all alone or if he ever had help from friends/family, even just simple cutting of the balsa wood into simple templated shapes for him to later construct. (To be clear, even if he had help it takes nothing away from how impressive this is)

"We overestimate what we can achieve in a day, and underestimate what we can achieve in a year."