Definitely something to puzzle over. I almost wish this weren't tagged abnormalities because framing the article through a DoA lens limits it. The conceit of a typical DoA article, at least to me, is an experiment in horror through negative space, centred around an exploration of an older, forgotten department. More often the horror stems from what you don't know, and though the department is presented as seemingly ancient, everything contained in their facilities seems preserved in time. There is little actual insight into how the department operated, or what they really did, or what led to the delineation from "Abnormalities" to "Foundation". Intriguing to start with, but as time has passed, it's a concept with diminished returns.
This is a bit different from what we might expect from DoA. What is really contained here? It doesn't feel like a containment facility. The article's skeleton is an iterative exploration of a spooky building, feeling more like a survival horror game than Foundation-business-as-usual. The "anomalies" in their "containment chambers" aren't the centrepiece, but the decorative garnish on top. What the centrepiece is, is the eerie atmosphere to all this. Every room is described with vivid imagery, almost teetering on the edge between clinical and prose-like. The article itself physically constrained in width, and text justified, giving off claustrophobia. It's almost like the entire article is in service of the atmosphere, and that beyond that, there's no "point", like the typical DoA article might have you expect. I can't tell if any of the anomalies (except the last) are even meant to be references. I think they're diversions. The Statue is not present, and it's implied it escaped the building, and all other anomalies are now-dead or benign to begin with.
Is it all a sham? Is no one allowed in because it would break the illusion — and reveal that the Foundation in this setting isn't at all like "we" know them to be? That their organization isn't? That their resources are left disused and dwindling because they don't actually do anything? Maybe they're more afraid of these so-called anomalies than we are — maybe that's why they're committed to inaction, almost by accident, because they're paralysed by fear.
Outside the clear physical end — The Sculpture is no longer contained — there doesn't seem to be a coherent thematic conclusion. There's no world-ending threat; the Site, and the Foundation itself, and the entire article ring hollow. DoA might have seemed methodical, containing not only monsters that deserve to be kept underground, but among war-crimes and general abuses against humanity, their own monsters. The Foundation here is certainly not. Whatever it was, is rotted out beyond comprehension. And the personnel who once worked for it are being given the full insight. Maybe there really is nothing at the core. It makes you wonder, then, if they are the ones Dying In The Dark (a now-empty shibboleth, like ARD mentioned), then why the seeming inactivity? Is it that they lost so long ago that it no longer matters? Or was it a facade to begin with?