I checked the paper cited in that article, and it has an author correction published last week:

The Strang splitting maximum likelihood estimator had a minor error (thanks to Anders Gantzhorn Kristensen for identifying it). In the last step of the Strang splitting in the pseudo maximum likelihood estimation, the flow should have been evaluated in the observation at time t_i, but was wrongly partially evaluated at time t_i–1. When corrected, the tipping time estimate changes by 8 years.

(emphasis mine)

Now we only need re-insurance companies to fund a tanker fleet of ~500 mega tons of salt to restart it.

Maybe even some kind of foundation could coordinate it, like it National Science one