This article has some cowboy coding themes I don't agree with. If the takeaway from the article is that frameworks are bad for the age of AI, I would disagree with that. Standardization, and working with a team of developers all using the same framework has huge benefits. The same is true with agents. Agents have finite context, when an agent knows it is using rails, it automatically can assume a lot about how things work. LLM training data has a lot of framework use patterns deeply instilled. Agents using frameworks that LLMs have extensive training on produce high quality, consistent results without needing to provide a bunch of custom context for bespoke foundational code. Multiple devs and agents all using a well known framework automatically benefit from a shared mental model.
When there are multiple devs + agents all interacting with the same code base, consistency and standards are essential for maintainability. Each time a dev fires up their agent for a framework their context doesn't need to be saturated with bespoke foundational information. LLM and devs can leverage their extensive training when using a framework.
I didn't even touch on all the other benefits mature frameworks bring outside of shared mental model: security hardening, teams providing security patches, performance tuning, dependability, documentation, 3rd party ecosystems. etc.