Every bamboo pole is different..
For this reason bamboo could never fit into modern engineering practices. Engineers use things like I-beams because, (in theory) each one is the same and they have been tested (probably millions of times) Their structural characteristics are known.
So an engineer can sign off on a building and the team can get architectural indemnity insurance.
Bamboo, and also things like using the entire trunk of young trees, are much much more efficient in terms of embodied energy. Eg, a tree is designed for strength / flexibility, why cut it up and then glue it back together to form a gluelam beam?
Its because engineers can sign off on it then..
Maybe theres some innovative way to integrate stuff like bamboo into modern engineering practices, maybe each individual unique bamboo pole could be scanned (like an MRI) and AI could be used to accurately structurally model it. The the whole structure could be accurately modeled and signed off on in theory.