I totally get the negative reception to this house. It is very weird. I love it.
It starts off incredibly strong with a towering graveyard facade. Creeping atmospheric vibes leading into an almost pitch-dark room, with the major setpiece being your own burial site above your head. I love how tall the scene is. The grave hole itself is just
slightly too high up. It ends up leaving your peripheral vision completely. It's only the dripping of water and the lack of other visuals that lead your eye up that direction. What a great scene. I love the Poltergeist-esque fresh dirt scenes that follow too; those always hit for me, and it wouldn't feel like a proper Graveyard house without at least a couple rooms like that.
The rest of the house proceeds to send you through an afterlife that is increasingly incomprehensible. This is not heaven or hell, or anything that simple. These are layers and spaces too obtuse and monolithic to parse. These are spaces formed adjacent to ... gods, maybe? But they're never seen. Maybe that's not it. Maybe these are the result of primordial forces or entities, or ... maybe not. Where is this?
Some layers are more structured like ruins, as if there is history here. But whatever civilization was here certainly wasn't human, and none of the glyphs or symbols are recognizable. Sometimes the scenes incorporate technology, but it's certainly not like any technology you've ever seen. You don't know the point of these vats or discs, seemingly made of human and animal parts. They are almost incidental as you walk through each room.
Other layers are entirely abstracted. Escher-esque staircases, tall blank stone walls. Monolithic structures with no understandable purpose. Human figures trapped within, ... or maybe formed out of this stone labyrinth's walls.
Meanwhile, Flesheaters never cease to attack at any opportunity they can. Despite how strange and complex the rooms get, the monsters and narrative remain as simple as they began. Death was not the end. Flesheaters are after you. Run.
I totally get just being confused or bored by this house's design. I don't expect many people to connect with this one like I have. But I really love how this house uses it's bare premise as a trojan horse, carrying a Lovecraftian madness house within. The house begins in the real human world, and as you delve deeper into the pit, you find worlds that mortals could never possibly comprehend. That's crazy cool to me.
It reminds me a lot of HHN31's Decendants of Destruction. On one level, DoD was a prequel to Seeds of Extinction following the humans of NYC being trapped in their own subway systems and going insane; but on a deeper level, DoD was actually a crazy attempt at making the HHN-equivalent of All Tomorrow's. A sci-fi horror speculative evolution house showing how these trapped humans evolved over the course of millions of years into terrifying bioluminescent mole creatures, portrayed using the same format as Michael Myers jumpscaring you with a knife next door.
I love how bold both of these houses are. They will never be the most popular, and they certainly aren't the best of their respective events. But I legitimately really do have a ton of fondness and passion for how they push the limits of the haunt attraction format. I also just think the houses are fun as regular haunts too! The sets are cool and detailed, and the casts have only gotten more intense as the run progresses.
This post is a bit more indulgent than some others I've made regarding HHN over the years, but I wanted to get across exactly why I love a house that ... seems to be generally panned by those who experience it.

A totally valid response! But one I couldn't disagree on more.