it’s unclear

Russian with a cat girl profile picture has been working on replicating this, posting their progress on Twitter

May be referring to this: https://www.tomshardware.com/news/call-to-pause-superconductor-experiments-parodies-open-letter-to-pause-ai-experiments

Then the letter quickly establishes its case for caution, pausing superconductor experiments that could cause astonishing challenges. It asserts that the worlds of physics and technology could be changed forever, and this is backed by “top scientific institutions and Russian anime cat girls.”