You are pointing to a different set of dots than gbronner.
They are talking about the advantages of post-and-beam construction - extremely tolerant of heterogeneous and uneven lumber, can avoid using nails, etc. This article gives the impression that post-and-beam construction needed tons of expensive materials and skilled laborers - but they are saying it's not the case, it just was less amenable to economies of scale. You can't ship in hearty lads to hew logs the way you can ship in boards and nails.