I'm going to hypothesize here that bamboo works similarly to wood in the "wicks water and bacteria in, bacteria get stuck, water evaporates out desiccating bacteria to death" mechanism. The issue I see is the whole "glue joints are bad" thing from the article. Because bamboo grows in hollow tubes, there's no such thing as 12/4 bamboo, you have to glue up a bunch of tiny pieces, so there are lots of glue joints.