The changes add a lot of depth to the page and clarifies often-ignored parts of the lore like Level 2's blackout. It felt like it was connected to the other parts of the Backrooms, which is something not all pages can pull off, so bravo. The added sections and especially the excerpts were extremely well written as well.
I do have an annoyance with the article: it's ending isn't satisfactory. We are introduced to a character who is working to better understand Voidstone and a character moving to Base Alpha to see if they fixed the problems with them, but we never get any conclusion to either of these plotlines. There should at least be a follow-up blurb, but I'd prefer if we actually got to read more from Dr. Laurent's research.
There are some minor SPaG parts that I noticed, but they were minor.
"An excerpt from an article written by Dr Laurent" ~ Dr should have a period after it
"I became the lead scientist for the collaborative The M.E.G.-Ariane Circle voidstone research team" ~ "The" before "M.E.G." should be dropped because it's already present before the adjective "collaborative".