Reading such a passionate take as someone who has looked up is a strange experience, I must admit. Kinda like how the Bernard twist in S01 of Westworld felt. I'll try to respond as substantively as I can, regardless:

  That Claude rarely, if ever, actually "remembers". Since these are just random markdown files randomly injected into the tiny context.

Complaining about your anecdotal experiences with Claude(Code, hopefully?) isn't a serious criticism, the markdown files are optimized to not be random, and calling 1,000,000 tokens of context "tiny" seems like a plainly unreasonable bar. How much of War and Peace can you hold in your head at once and quote flawlessly, and is it more than 133%?

  What a useless experiment

The experiment is testing their fixes to the problem you lamented just one sentence prior.

  Define "effectively"

They do exactly that in figure 3, as mentioned at the end of the sentence you're quoting. Opus 5 used that advice to raise its benchmark score by 46.8%, and Opus 4.7 used it for a gain of 82.7%. The specific benchmark looks far from trivial, too: https://github.com/pgasawa/continual-learning-bench/tree/mai...

  Then it's not "memory". It's just telling the model to read a text/spec file before implementing something

It fits the colloquial definition, and there is no specific scientific definition in CogSci, CogPsych, Neuro, CogNeuro, NeuroPsych, nor philosophy. There's lots of useful ones offered in different contexts, but they differ considerably.[1] Regardless, it's well accepted industry jargon at this point: it doesn't matter in the same way that it doesn't matter than databases can never truly be "queried" because they can't engage in linguistic discourse.

  So, random injection of random things into context that depend on whether the short ToC entries have any relevance on what Claude is doing

Isn't this inevitably, undeniably true of any possible memory system, just from, say, a big-O perspective? If you have to persist every item in a list to decide which one is relevant enough to load into the same pool of memory, there's no point in the second step anymore.

  What is this bloated article about?

This article is very plausibly wrong, misguided, or even philosophically bankrupt, but I don't see any support for the claim that its topic is unclear. It's discussing the efficacy of proactive state management during idle periods for longrunning LLM-backed agents.

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[1]: For example, did you know that modern CogSci is generally convinced that memories are illusions that the brain creates through a process that merely consults ineffable underlying representations (usually), and not an object retrieved from storage? That definition would also contradict Anthropic's wording here, but only in a way that weakens your criticism rather than supports it.