The more I think about the film, the more I respect what the writers tried to do. Though I think it still ends up being unsatisfying in execution.
It was always going to be an uphill battle to adopt the concept of The Backrooms for a more mainstream audience. The original concept relied on its audience understanding of what it means to "noclip" out of a video game, going somewhere the designers never intended you to be. It was also helpful to understand how early games would use "garbage data" to create the space if you went somewhere you weren't supposed to get to, randomly arranging sprites and other bits of data in ways that were uncanny and at times disturbing.
What most audiences do understand these days is the concept of encountering Bad A.I. Art. When an algorithm copies data from multiple sources and arranges it in a way to create a poor simulacrum of art that it is unable to recognize as such. And so the film seems to base itself around asking what kind of person would convince themselves that such a simulacrum was not only as good as the real thing, but better. Who would want to live in such a world as The Backrooms? And it answers that it would be someone who is deeply insecure about their own ability to create; who sees human beings as objects to manipulate, use up, and dispose of; and who cannot tolerate being challenged, criticized, or thwarted in any way. In other words, the investor class that is currently pushing A.I. on the rest of the world.
And allowing such a person free reign to influence the world in their image creates something utterly monstrous.