The El Niño reading there corresponds with the Atlantic Meridional Overturning Circulation (AMOC) collapsing.
The result of such a collapse is a complete upheaval of global climate patterns, destroying agricultural production on a civilization-ending scale.
Generally, the actual seriousness of these things is so out of proportions for normal people, they have great difficulty appreciating it properly. Taking their hunches from public postures and stances assumed by "authority" figures on the matter doesn't help.
climate scientists are fantastic at predicting ecological impact. civilizational/economic impacts cannot be made with the same confidence
Lower-case “civilizations” come and go on a scale larger than one lifetime, while Civilization itself is the medium. I do not think that people deeply rooted in the past five minutes are likely to notice.