[syntheweave]

What I like about the song OP linked lies mostly in the legacy of how Vocaloid has been used in the past, e.g. "Disappearance of Hatsune Miku" [0] - there are certain textural elements that come with using Vocaloid that show up repeatedly, and a big one among them is "rapid chatter" effects. There are other ways of getting a similar result that don't sound the same, just like a session performance is probably going to sound different from a sampled instrument.

If you examine this stuff on the basis of harmonic structure, rhythm or arrangement you're basically going down the path of discounting most of electronic music, which is discretized into microgenres just on the basis of using a faster tempo, a different snare hit sound or an unusual mixing strategy. You have to really lean into timbre and texture to find what to appreciate.

[0] https://youtu.be/5qkTpJAhywg