Many of the criticism here ring true, from the way the characters are written, to the worldbuilding to the animation and yet the most frustrating thing for me is how the show has potential but is very buried underneath. To begin with the pacing is atrocious, I can blame Amazon for only giving them only 8 episodes but being honest if they knew the limited amount of time they had they should have cut down on the musical numbers which always felt forced and weren't very good that I unashamedly ended up skipping most of the time and instead show more character interaction that, when it happens, can be really enjoyable.
Other aspect that felt very underutilized was the politics of the hellworld, Alastor plotting shit with the other overlords? Charlie having to act as a charming leader to gain more supporters? Sign me up for that shit too bad that we don't have time for that because of the show's lack of balance between A and B plots where most of the time things just happen way too fast for any of it to have any real lasting impact. Pretty dissapoiting because you get to met a lot of great characters that way like Rosie, Zestial or Carmilla.
Speaking of the characters: Charlie is fine but bland as a protagonist, Vaggie needs a better voice actress and not feel like a vacum of personality, Angel Dust arc is mostly good but it kind of happens offscreen for the most part, Sir Pentious (the real protagonist) has a great arc but because of the fast pacing he feels robbed of the moments that would have make his sacrifice really impacful (minus bullshit death scene), Alastor as a character gets interesting after jobbing against Adam showing that Viv atleast has some restain to make his gary stu OC not that broken, special mention for Cherry bomb for apearing only for TWO episodes and I know some of you didn't like how Lucifer is protraited here, but he being an autistic narcisistic manlet that doesn't give a shit about what happens to sinners didn't felt too out of place, the rest are kind of there. Of course typical for Viv, the show quickly abandones the hotel premise but with 8 episodes I guess she didn't have many options, even if that makes the hotel feel like a wasteland with the same 5 guys running around, having more time to add more characters to the hotel, the final confrontation with the angels would have feel more important that just watching obviously background cannibals fight.
With that I want to talk about the villains, first of all, Adam sucks; not in the "omg he's such a baddie" but in the way that he's obnoxious because is easy to tell the writers thought they were being so clever by making him into an unlikable asshole so you root for his death. While that can work, the way that is done here is very shallow where instead of showing him as a two faced idiot that tries to act all mighty and keep appearances with the other souls in heaven is instead the same asshole always talking like a sailor in front of his superiors, its just annoying and his death is made to be pathetic when having him being victim of his own hubris would have been more fitting.
Going with the Vees, no complains with Valentino I think as the roadblock for Angel Dust to defeat he plays that part very well and he can be intimidating, Vox has the same problem with Adam where Viv only knows to make her villians insuffable in order for you to hate them and Velvette is such a non-presence, she needed someone in the hotel to have a rivality to not feel like a third wheel, not that it would have mattered now because Viv had to make Valentino and Vox gay lovers instead of the more interesting idea of bussiness parthers that are just using each other.
In a prefect world Hazbin Hotel would have gotten a 24 episode season where the first 12 is just Charlie and company attending the new guest of the week, with the midseason ending with Adam bringing the next extermination sooner than expected and the last 12 episodes the hotel guests preparing for war. But even with all of that I can't hate the show, despite being fill with the same crap that plagues modern animation Hazbin in presentation is different and is atleast honest about just being as degenerate it wants to be. And there's things to like about it; some of the characters, the message of redemtion and getting over your sins, what redemtion actually involves, the politics of heaven and hell, the trust that one day even the most damned soul will choose to do the correct thing but it is hard to see it because its covered through the lenses of a lib arts gradute that spends too much time of twitter.
I can again blame Amazon for all of the series shortcomings but Helluva Boss already showed what happens when Viv is left to her own devices and I genuinely think that she has gold here but needs to humble herself and admit that maybe she should hire someone with more experiencie writting scripts and dialogue. I wanna be

and believe that since Amazon has the rights they will try to reing over Viv's more facetious actitutes and keep the series from derailing into a gay drama and give her the filtered version of criticisms the series has received (knowing Viv, she will take none and double down on the worst aspects out of spite).
That's all I have to say for now, see you everyone in 2054 when season 2 drops.