Maybe, maybe not. There are dozens of unsolved problems to get to commercial fusion. For a lot of the problems, to solve them it doesn't matter if it's a stellarator or tokamak.

I would also be super careful about celebrating new designs as the way forward that will replace everything. When you look at the history of combustion engines we had a ton of new approaches (for example rotary engines) but after looking at all factors it turned that evolutionary changes to existing designs was the way forward.