> I just don't think there was a great way to make solved problems accessible before LLMs. I mean, these things were on github already, and still got reimplemented over and over again.

What kranner said. There was never an accessibility problem for emulators. The reason there are a lot of emulators on github is that a lot of people wanted to write an emulator, not that a lot of people wanted to run an emulator and just couldn't find it.