Negative Negs spit out low effort snark, they said the same thing about solar, electric cars, even multicore, jit, open source. Thanks for refuting them, the forum software itself should either quarantine the response or auto respond before the comment is submitted. These people don't build the future.
Yes it’s a net positive if you ignore the 100x extra power it took to actually run the reactor, so actually no it’s not net energy positive. Not even close.
Nothing to do with cost, we can not build a fusion reactor in 2025 with any amount of money that will produce more energy and goes into it.