“That successful demonstration helps resolve the greatest uncertainty in the quest to build the world’s first fusion power plant that can produce more power than it consumes, according to the project’s leaders at MIT and startup company Commonwealth Fusion Systems (CFS).”
A 20 tesla high-temperature superconducting magnet is a real engineering result. It is also a magnet, not a reactor. The press release comes from MIT, the startup’s own partner. Fusion has been thirty years away for decades, and a good magnet moves the clock without stopping it.