I have a bamboo cutting board that I've been using for about 10 years and it's still as good as new. Perhaps it was treated specially, because I've never done anything special to care for it (and had no idea that might be necessary).

I also have some bamboo spoons and spatulas that get used almost daily and they have lasted for many years as well. I wash them in the dishwasher, which perhaps gives them the level of moisture needed to stay good.

That is the problem, bamboo stuff actually requires specific care in the US that it doesn't in Japan. I was going to buy some really nice bowls there, and my sister suggested I not do it because they would break in the US, but not in Japan. (with the equivalent care)

Your bamboo cutting board is likely made in a manner similar to bamboo flooring as outlined in the article - a lot of treatments to make it stable and usable.