I think it’s both
When I worked in an office, the amount of people who would demand that the heating was cranked up as they were sat there in a cotton t-shirt instead of layering up.
The amount of people I know who have every light turned on in their house, the heating on all day throughout the winter, don’t bother with basically insulation, don’t turn things off at night, drive to places that are easily in walking distance etc.
I could keep going on forever with a list of small and basic changes such as products purchased, recycling, waste etc but I’d be here forever.
As individuals we can try, but the average population is too selfish and isn’t going to stop until it’s too late
Between the likes of pollution, deforestation, wars, extinction of species to name a few…the only thing that could save this planet is humanity somehow becoming infertile.
Rick & Morty