And? Yep, non-radioactive fluoride salt can be somewhat managed with ludicrously expensive materials. The equation is rather different when you add thorium to the equation. Also note that nine years are nowhere near long enough.
There's a reason we don't see those kinds of reactors in the wild: They can't realistically be built as production-scale power plants. If they did greedy bastards would long-since have invested in the tech and tried to monopolise electricity production with patents and undercutting the competition.