There is clearly LLM-prose involved, but it's pretty well done. Here's one example: "The reallocations were real, but they were never the bottleneck."

LLMs love this pattern. Whether one put it into this text, or the author soaked it up and now used it himself, who knows. But it is one of the few things in the post that gives me the ick.

And then, there's the verbosity.

If I had to guess, an LLM was involved, but the author did a good job with manual writing and editing, too.