PlagueOfGripes | Hazbin Hotel Review, Niffty and World Building @PlagueOfGripes | Uploaded February 2024 | Updated October 2024, 2 hours ago.
I saw the final two episodes a few hours prior to publishing this. Same criticisms but at least a couple of minor things got explained.

deviantart.com/gannadene/art/Niffty-1016979712
newgrounds.com/art/view/plagueofgripes/niffty?updated=1706902101

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