We would still be in for a bad time, but I would say there is hope...

But of course it will be probably decades before a working fusion reactor is in service.

I have no idea when it will be available for commercial power production... but even if we had a blueprint for a Fusion power plant, just look at how long it takes to build a nuclear power plant...
What I can say is that the first working Fusion power plant will NOT be using the NIF method.

I interviewed at NIF to be shot director in 2008-ish, and that facility is HUGE... and they can only do a few shots a day- if even that...

I think the successful fusion reactor will be a hybrid of a few techniques. There are multiple commercial efforts working on this, I have no idea if they will be successful, but I am happy fusion power has reached the point where people are gambling that they can make it work... I was even contacted by one such venture out of the blue and offered a job (I told them I did not have the experience with monster laser systems they needed, and offered to advise for free where I could, which I did a couple of times).

I think there are promising approaches, but even the most promising have many years of research and development to get to the point where they are viable.

In short, fusion may help us get power without having to use fossil fuels... at some point well in the future, but it will not save us.