Why does Biden want to rejoin the Paris Agreement?

Even CNN admitted in a 2018 article that the Paris Agreement will not work (see https://www.cnn.com/2018/12/03/opinions/paris-agreement-wont-save-us/index.html).

As with most international agreements involving hundreds of countries, the bulk of the costs are borne by just a few countries. In the case of climate accords of Kyoto, Bali Action Plan, the Copenhagen debacle, nothing was achieved. The Paris accord “establishes common binding procedural commitments for all countries, but leaves it to each to decide its nonbinding “nationally determined contribution” (NDC).”. Read that carefully:

1. Each country decides its contribution.
2. The determined contribution is “nonbinding”.

If you are still in doubt, read this critique of China’s NDC:
https://www.nature.com/articles/s41467-019-09159-0

So back to my question: Why would Biden ever want to join the Paris Accord?