The article doesn't explicitly spell it out until several paragraphs later, but I think what your quoted sentence is alluding to is that Cursor, Cline et al can be pretty revolutionary in terms of removing toil from the development process.
Need to perform a gnarly refactor that's easy to describe but difficult to implement because it's spread far and wide across the codebase? Let the LLM handle it and then check its work. Stuck in dependency hell because you updated one package due to a CVE? The LLM can (often) sort that out for you. Heck, did the IDE's refactor tool fail at renaming a function again? LLM.
I'm remain skeptical of LLM-based development insofar as I think the enshitification will inevitably come when the Magic Money Machine breaks down. And I don't think I would hire a programmer that needs LLM assistance in order to program. But it's hard to deny that it has made me a lot more productive. At the current price it's a no-brainer to use it.
(I should know since I've created half-a-dozen tools for this with gptel. Cline hasn't been any better on my codebase.)
Cline is closer in spirit to GPTel, but since CLINE is an actual business, it does seem to do well off the bat. That said, I haven't found it to be "hugely better" compared to whatever you can hack in GPTel.
Quite frankly being able to hack the tools on the go in Elisp, makes GPTel far far better (for some of us anyway).
(Thanks for creating GPTel BTW!)