Practical fusion has been 15 hypothetical years out for at least four decades. If that time is finally down to 10 calendar years, that is a very good thing. If.
Yes, and even if it takes 20 years, 50 years, 100 years, or longer, the effort will ultimately be worthwhile for the later generations who do benefit from the efforts made by the earlier generations. If the benefits are suddenly realized in the current generation, so much the better. in any event, the effort must start sometime, the sooner the better.