whatever
One thing that is undeniable is that there is change in the climate, whatever the cause.
People I've met and spoken to all around the world, especially older people in poorer countries involved in agriculture or fishing where it is most keenly felt are very aware of it. They do understand that there are longer term cycles at work like El Nino because their parents and grandparents pass this knowledge down. But they're now seeing dramatic changes that are happening in very compressed timeframes.
So regardless of the cause, it is still worth paying attention to this as it will affect everyone at some point either directly or indirectly.