The Deltarune version of the Undertale characters are extremely frustrating and I find that interesting.
Asgore is such a tone deaf loser it's hard to feel bad for him sometimes. Sans is extremely mean to Kris at the end of Ch4 for no reason (he has to know how inappropriate he's being when the Teenager With Divorced Parents Is Trying To Sleep In The Next Room), Papyrus is absent so he can't be annoying, Undyne is ACAB, and my defenses for Alphys run out in Deltarune bc she's so annoying in it. Only MTT is interesting and he too does not show his face
I think partly it and other new characters just show this "the adults suck and don't care" side of the story that helps with the themes of feeling neglected and running to fantasy and having to solve problems themselves. It's not just the Undertale-mirrors that suck, it's most of the adults.
There's this pervasive anxiety that "No one cares and you will be forgotten". Kris feels neglected. Noelle feels neglected. Susie feels neglected. Ralsei feels neglected. All the secret bosses are neglected.
it's just trying to be realistic/forward the themes but I just have to say that the scene at the end of Ch4 at Kris' felt more wrong than the stuff with the Titans and Gerson's statue/corpse. And with everything we were doing to save Toriel too!
The ugly reality is more unpleasant than Dreamworld horror. No wonder these kids want to run away so bad.