This review appears to be of the first version despite the recent date. (The rewrite filed the serial numbers off the SCP references and changed character names both for copyright reasons and to provide a degree of separation from the original.)

I read both versions and agree that the second half of the first version was very abstract and difficult to follow. While I would consider the first half of the new version more edited than rewritten, the second half got a significant overhaul which fixed almost all of my issues with it and made for (in my opinion) a much more satisfying ending. I would recommend giving the new version another chance, though those who read the first version may find the new character names distracting. (Most didn't bother me, but Marion Wheeler -> Marie Quinn never felt quite right.)

The article says:

"And at the top of the food chain sits SCP-3125 (renamed in the published edition, but the designation is so perfect I am using it anyway) ..."