I actually think the ending of it really prevented it from being that (at least for me). It started good, then the second act was like "Whoah, this is the most amazing sci-fi I've ever read", then the third act was just all over the place and completely lost me. And that's the revised ending, I didn't read the original one.
Same experience. So much promise that the way it collapses is disappointing, almost angry-making. I even gave it a second try thinking that maybe I'd just missed something. Nope.
It's good, but didn't leave that big of an impression on me, maybe because I didn't know all the SCP stuff beforehand, I just liked qntm's other works so I read it.