Obviously someone who is familiar with the field but it's kind of strange that they compare these two technologies since they aren't used for the same construction. You've not going to use glulam and CLT to build your one story house. It's about building taller places.
Actually CLT is wonderful for one story house. The foundation becomes much cheaper because of walls being low weight. This can massively reduce home cost (as concrete is expensive). The bad thing is that CLT itself is more expensive. The costs need to go down. Edit: I realize I made a mistake here. Americans use stick framing, which already is low weight. This was in reference to bricks and concrete (cast on site or pre-cast) construction. CLT allows to use its members much like concrete (slabs get mounted exactly same way as concrete slabs, etc). In such sense CLT is much better than stick framing.
I bet there are some single story houses with glulams. Certainly plenty of two-story houses do. I have a 30 inch tall glulam that spans 35 feet across my garage holding up a good chunk of the second floor.
