For somebody who wants to be such a strong personality, Lily's tastes really do change with the wind. When one person of the Right Opinion (or Right Skin Color) says something, she adopts it wholeheartedly, even if it goes against an opinion she held before. There's no real thought behind anything she does, she just moves with the tides, either accepting the 'right things' to accept or hating things that are popular to hate.
Because honestly the anti-Vaggie sentiment's really shallow. The two writers in that podcast call her out for being a totally undefined character with a super-vague relationship with Charlie that you can't even start to figure out, which isn't true. Vaggie is highly attached to Charlie and extremely protective of her. She's angry at anybody who looks like they would remotely threaten her, is highly anxious when Charlie puts herself in perceived danger, and obviously cares very much about Charlie and about keeping her safe. You can extrapolate a lot from that even if it's not directly stated (and it shouldn't be in the pilot episode where you're selling an audience or a producer on a premise and you have to introduce that premise, the setting, the ensemble, the dynamics... what did these guys want? A conversation between Vaggie and Charlie where they talk at each other about how they met and why they're girlfriends? Sounds natural to me.) Hell, there's a huge point of interest when Angel Dust asks her (somewhat paraphrased), "Is there a man you
do trust? Any men? Heh.
Men?" Obviously something happened to her, it was an evil done by men, and it's probably related to why she's in Hell.
But because it's not elaborated on or specifically talked about, it doesn't exist and implicit information isn't real. Same thing for them just laughing off Alastor, too. The two writers make a point that there are 'no consequences' in Hazbin Hotel because Charlie didn't shake Alastor's hand, apparently totally unaware that the conflict is obviously going to be Alastor manipulating events in order to force Charlie into a position where they have to make a deal. The pilot established the tension of 'what happens if she does make a deal?' instead of following the immediate consequences and they dismissed that as the show having no stakes. Given that they're professional writers it was pretty baffling to see them just utterly not understand what the show was doing, 'cuz it aint' that hard.
Going back to Lily specifically, I did a quick search to figure out what the context for suddenly disliking Vaggie is and yeah, it really is
that shallow; somebody else said something, I assume it was somebody with some amount of clout, therefore Lily is now cold to the character. Also the last time she mentioned Vaggie (properly spelled, at least) was three months ago and only now does she get an 'Anonymous Ask' which conveniently sets her up to mention an upcoming video. It's small potatoes compared to how she usually anons herself but still part of her pattern.
Somewhat unrelated but in looking for what she said about Vaggie I also found a few posts where she was railing against Hazbin ships putting Charlie with anybody that wasn't Vaggie and saying 'why would anybody assume she liked men?' She says this in the same breath as mentioning that Charlie's sexuality isn't well-explained within context of the show, implying that she must have looked at outside information too... which would reveal that Charlie is bi and that shipping her with male characters wouldn't be a problem even
if Vivzie herself cared (and Vivzie does not care how people have fun with her characters so why raise hackles on her behalf?) Just thought that bi erasure was pretty funny coming from Lily.