“It’s not a massive energy output - only enough to boil about 60 kettles’ worth of water.”
JET produced 59 megajoules over five seconds and broke its own record. It still put in far more energy than it got out. The real point is validating design choices for ITER, which is years behind schedule and billions over budget. Fusion remains the energy source of the future, as it has been for 70 years.