Absolutely! It’s like a proof of concept. We can change things for the better. A proof of concept is still not a viable solution. We’re still adding emissions to the atmosphere (though at a rather constant rate now), and there’s still the accumulated emissions. Both might lead to +3°C or +4°C by the end of the century, a terrible outlook.

As the article says:

Ultimately, the progress we have made should encourage us that progress is possible, but the large and growing gap between where we are headed today and what is needed to limit warming to well-below 2C means that we need to double down and light a (carbon-free) fire under policymakers to ratchet up emissions reductions over the next decade. Flattening the curve of global emissions is only the first step in a long road to get it all the way down to zero.