So if what you mean to say is taken to be truth, you may also assume that the only natural path for the show to take is to either
A: Make Eclipsa into a sympathetic character and the arbiter of the Mewman Monster conflict
B: Show that both sides have done things in the name of their kind that was deplorable and thus they come to a consensus and join together against a greater evil (You can argue this already happened, considering that Buff Frog helped Moon and Marco get to Star, indirectly helping her get resurrected and defeat Toffee)
C: Absolutely blow the underlying themes she's been laying down to some overarching holier than thous message about not judging a book by its cover and dropping the ball hardcore
Choice C makes me cry, just thinking about Nefcy blowing the opportunity to make this a more serious show would be a huge bummer.
The only problem I have with this movie is that its just so damn hard for them to do serious stuff given the tone. And its hard to be serious without at least acknowledging the stuff that came before. Even a slight nod would help alleviate the gripes people had. If Marco had mentioned the confession, even if Star said "We'll talk later", it'd have been more believable.
There are a couple moments like these during the serious parts of this show where it being a kid's show serves it poorly. They just can't afford to do it as dark as they want to. But maybe Disney will let them do whatever the fuck they want in the next two seasons. Considering the season just started and we watched the main character melt the fucking face off the big bad. Tell me you thought that was happening after watching the first episode.
Either way, we'll know in a couple months.