You apparently missed the statement and accompanying photograph that MIT has solved the plasma turbulence problem.
"We have shown that, in principle, it is possible to eliminate turbulence," he says. "To me, this is just a mind-boggling achievement. With adequate federal funding, a prototype nuclear fusion reactor could be tested within 30 to 40 years. A commercial reactor could be deployed by the middle of the century
That above was what the article actually said . They haven't solved anything, just "it's possible in principle". To me that just sounds like more bureaucratize for "we need more money".