antirezWriting a "clear room" Z80 and Spectrum emulator with Claude Code
There isn't any attempt to falsify the "clean room" claim in the article - a rational approach would be to not provide any documents about the Z80 and the Spectrum, and just ask it to one-shot an emulator and compare the outputs...
If the one-shot output resembles anything working (and I am betting it will), then obviously this isn't clean room at all.
You didn't read the full article. The past paragraph talks about this specifically.