The content of the bamboo is the luminous vajrayana, the traveler is the confused mind. Of course other lives are not restricted in any way, it is your confusion that creates the circumstances for your rebirth.
Then how is this different from ordinary samsaric experience?
Obviously the luminous vajrayana with its possible outcome of realization in one life but with the risk of instead attaining vajra hell.
"The direct, hard to understand, subtle field of knowing, the Great Path, is non-conceptual (akalpana), and entirely beyond the grasp of intellectual thought. Divorced from verbal ideation, it is difficult to point out and as difficult to enquire into. It cannot be communicated through words and [therefore] is not within the scope of the neophyte (adikarmika). Nevertheless the path is to be approached through studying scriptures (sutra) of the World-Teacher and following the personal instructions (upadesa) of one's Guru-ji."
Bodhicittabhavana by Acarya Sri Manjusrimitra