It seems to be for the first version, judging by the use of the original names, which is odd because the review's from this year.

The rewrite definitely improves on the ending and its delivery, but it's still largely the same plot, so it may not address all of your issues.

The author’s other stories like Ra and Fine Structure have the same issue, in my opinion. He has interesting ideas, but cannot seem to write an ending.

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.)

I had the opposite reaction. The second half was garbage, but the first half was so good and original I'd recommend it just for that.

The rewrite is excellent