In a word, yes.
There is 50% more carbon dioxide in our atmosphere than before industrial times. That amount is going to change our atmosphere and planet forever, and there’s no real way to stop it. We are definitely going to see huge changes in the dynamics of our weather systems, biodiversity, and sea levels to name just a few.
The Earth is a hugely complicated web of interactions, and they will all be impacted by the rise in temperature we’ve already seen (1.1 degrees celsius above pre-industrial times) and the further warming we’ll see from the fossil fuels we’ve already burned (likely another degree).
But this isn’t a question with two outcomes, it’s a question with infinite outcomes. So yes, it’s too late to stop any changes to the climate, but it’s not too late to stop further damage and further suffering. Every day our governments choose that our societies will be run on fossil fuels, is another step down the road toward climate disruption.
We’ve got a lot of scenarios to consider. Another 2 degrees of warming, 4 degrees, 8 degrees? Each of those steps down the road gets worse and worse and worse. The more carbon in our atmosphere, the more heat and energy. Energy in the atmosphere (and oceans) drives hurricanes, tornados, rainfall, droughts, and snow storms. They, in turn, lead to mass migrations, famine, wildlife decline, and glaciers disappearing. And this will affect everyone, but not equally by any means. As always, those with the most to lose usually have the least already. These scenarios mean we should be planning for these changes. Preparing now for sea level rise, preparing for more flooding, migrations, wildfires, famines. But our governments are just not moving at the pace to match the current climate crisis we face.