Agree with all of this. I also think it's interesting how Terezi has ended up being the caretaker for presumably both species/children. Like with Ly'lac there are very obvious instances of Terezi's guidance with the command terminal. Unclear if they are pre-set commands or if she's actively messaging them? But it's also clear that this isn't what she wants at all and is going along with it because she feels like she has no better options, but at the same time feels an obligation to care about these kids. Also possibly exploiting Terezi's alien issues with parental figures (both her lusus and Redglare) though it's hard to tell how much he actually knows about Terezi.
The doc scratch parallels with dirk are also so important?? I don't know if dirk actually knows about doc scratch or what he did to alternia but he is pretty much playing that same role with deltrius. Even the moon. With the dumb anime glasses.