Given the pace of development in this space, it is probably worth noting in the title that this is from November 2024 so the results might be a bit dated.
That said, I wouldn't expect things to change too drastically. TFA goes into details, but in short LLMs are already quite good at whiteboarding (where you interactively describe the diagram you want). They're also really bad at generating a diagram from an existing system. In either case, small, incremental improvements won't really help; you'd need a large change to move the needle.