The Otsutsuki Clan's name is "大筒木" is a reference to
Princess Kaguya from The Tale of the Bamboo Cutter, one of the consorts of
Emperor Suinin, and the literal translation of the name means the "
great tube-tree." That's selected specifically so that it works as a reference to how their clan is focused on using the Ten Tails as a
God Tree for sucking out all of the chakra out of worlds, where it blooms into a Lotus –
which is meant to represent something that is a form of transcendent purity beyond desire & attachment which bears the Chakra fruit ...which they consume for their own personal power at the expense of everyone on those worlds.
When you're looking at this being intentionally constructed as a commentary about Japan & real-world moral examinations of the positions that we should be considering as people and how we look at the world and others in it – this is literally the exact same metaphor that
Final Fantasy VII establishes with Shinra & the Mako Reactors sucking the life out of the Planet. There's actually a shitton more overlapping thematic context and more specifically there are several points of naming wordplay that they use throughout the series that
Final Fantasy VII actually established to help iterate on how those themes are looked at. That thematic evolution is the same reason that
Devil May Cry V used
the demon tree Qliphoth, which is a more direct reference to the other primary origin:
the Tree of Life – Sefirot from
End of Evangelion. One of the biggest underlying drives for that as such a specific storytelling choice in modern pop-culture from Japan is because it's also building off of a history of other media that built the framework for that by looking at the strained relationship that Japan has with the West & late-stage capitalism post-WWII.
Essentially,
Boruto is examining the concepts of Karma for the same reasons that
Final Fantasy VII Remake has to address the framework around the concepts of fate – because they're important underlying questions about how that struggle is understood.
If everything that you do has already been predetermined by what happened before – is it right to accept that as reality and ensure that those who come after you have a better life in this reality, or is it right to reject the binding framework itself and build a future where those who come after you aren't trapped by those same forces of guiding predestination? Which one of those paths is evil and why?
The answer is always that the path that's evil is the one that's walked by someone who's truly just doing it for themselves at the expense of the needs of others, rather than actually having a primary focus on the greater good. This is because it makes them believe that their pain more egregious than the pain of anyone else and they're allowed to ignore the ends to justify their means. The path that is good is the one that leads towards understand that the pain that they feel is exactly like the pain that everyone else suffers from, and that the only way to achieve a better future is to operate with that understanding.