I think the "samurai" thing was more about trying to stay true to the established world and motif of Cyberpunk 2020 than relying on tropes for the genre. I find that a lot of what was involved in real-life bushido culture is misunderstood or misinterpreted by those that are not from that background. (Including myself. I'm always uncovering new tidbits I never considered before.) However, most people I think will clearly understand the idea of a "samurai" being a leader and a warrior that follows a strict code of honor and is willing to die for their beliefs.
But for the purposes of the game, it's valid to utilize the misinterpretations of the ideal, as Night City is based on Western culture...not Eastern. I also think it's quite allusive, as it directly references a culture that was ultimately comprised of a small number of dedicated warriors who were willing to fight to the death against a new culture that (in the eyes of the samurai, at least,) had betrayed the core of who and what they were to indulge in technology, luxuries, and a lifestyle that would erase their way of life from existence. Compared to the "samurai" in CP2077, the parallels are almost touching each other.