According to estimates, PV including battery storage will be the cheapest energy source to develop for nearly every country in the world by the 2030s. Surely even the most determined doomsayers won't go so far as to say we'll "kill the planet" until then.
Except global warming, even if we went net zero today, is still gonna have temps rise for a long time. We'll have to go net negative by a ton before we can reverse the effect.
Not to mention, cheap to make doesn't imply full on adoption. Oil, gas and coal will still be in use around then. I'd love to be wrong here, but it costs more to change than to stick with what's working.
The more pessimistic (already prior to this report unlikely!) projections of climate change are conditional on sustained heavy investment and development of fossil energy sources, which seems to me would make little sense if the alternative is significantly cheaper. So there's now an even lower chance we're in one of those truly apocalyptic timelines.