The other aspects of fusion get swept under the rug: high speed neutrons from sustained fusion energy production will degrade the equipment, so you build this HUGE EXPENSIVE facility and it will have a shelf life, and be somewhat radioactive, in ... well, I don't know the timeline, but I'll assume decades.

Even without that, fusion costs even with "free" fuel (I mean, it will probably be deuterium and separation will cost some money) will probably be quite high for operation, maintenance, to say nothing of the massive installation cost.

I think it is still worth the current investment in research though, it's not like I want the book closed on fusion power. But I wouldn't count on it getting us out of the global warming hole we are in.