I do have some sympathy with the skeptics insofar as I dont believe the science can be anyway accurate to the extent of human activity contributing to climate change, as distinct from measuring the carbon emissions being released into the atmosphere from human activity.
It is not beyond reason, in my opinion, that the effects may be exaggerated. But if its not possible to accurately measure the extent of human activity contributing to climate change then its also quite possible that the effects are being underestimated.
So my sympathy only goes so far and stops abruptly when I hear people denying it or dismissive of it altogether.
It is hard for some to take the global perspective, that is not a fault, just a trait. But it shouldn't be hard for the same people to look at themselves individually and see what they can do themselves to reduce carbon footprint.
Im a slow learner with this admittedly, with the exception of water. Thanks to the water charges debacle I studiously observed mine, and my households, water usage. It transpired we were wasting very little, if any at all. We washed and showered as we required, flushed toilets, cooked food. We set our dishwasher and washing machine to 'eco' levels. After that, some watering in the garden during summer (which isnt waste, just a relocating of a natural substance from one area back to mother nature).
And if any of us heard a tap running, we did what I guess 99.999% of the population would do - turn it off.
After that we have improved lots on food wastage, using leftovers for next day lunches, compost etc. We still have a way to go to reduce plastic and packaging overall.
But regardless of the true extent of climate change, or human activity contributing to it, its a bit of a no-brainer to not realise that the planet is being heavily polluted and that that is wholly unsustainable long-term. The bare minimum anyone can do is to become more aware of their own activity.
If it takes Greta, or school kids or whoever to raise the awareness, then im all for it. Good on them.