I'm not sure I fully understand. In my view, it's pretty evident that tests should test behavior and not structure. Coupling to implementation details is unavoidable but should be managed, and ideally minimized, to keep the test suite robust and maintainable.

Given the choice between a test suite that monkey patches out some dependency (redis, say) on a per-test basis, and one which substitutes a fake for this dependency in some centralized composition root, which one do you prefer, and why?

I find it hard to read articles where the agentic writing is this obvious. It's a distraction from the message of the text, which I'm sure is worth my time. Is there no way to stop generated writing from sounding like this?

What I've never really understood is why some people choose natural language for the abstraction. It just seems like such an odd and expensive choice. Most of the layers of abstraction we add in our codebase are written in the programming language of choice itself, they're functions, classes, what have you. But for this one specific flavor of abstraction, folks reach for natural language.

The one potential benefit I could think of for this over a more standard DSL is that non-technical colleagues would be able to read or even write these specs. But in practice I've only seen this pan out once in my life, and that was with a more traditional DSL rather than natural language.

Is there a hidden benefit I'm overlooking?

There's probably a lot wrong with the "coding was never the hard part" take, but this quote right here shows that the author is not willing to engage with the actual idea that folks who say this are espousing. Because if the author was discussing these ideas on good faith, he'd know that the answer is obvious: there's much, much more to a software engineer's job than just coding, and that other stuff is very hard to do well, and people pay for that.

Again, I'm not saying the "coding was never the hard part" folks are right, but I really, really hate straw men.

I always thought it was common sense and just basic critical thinking to take people paid by Anthropic praising products of Anthropic with a grain of salt (and let's be clear, that's what this is), but apparently it's not.

Ah, for context, which I suspect you may be unaware of, Jarred (the person who said the rewrite to rust went well) is the creator of bun, and the guy behind the rewrite.