Its a defense mechanism. There is little to nothing people in low income brackets can do to help. There is almost nothing the vast majority of people can do to help. Denying it doesn't really change anything, but it makes them feel better. There aren't (currently) many things that make financial sense to do.

We need big technological breakthroughs to solve the problems. Everything else is just crap to make people feel better. As much as I applaud the efforts of Musk, even that does little.

We need cheap solar, and inexpensive and efficient energy storage to make use of it. Solar is making headway, but energy storage is in the stone age. Without it, all we can do is replace a little fossil fuel electrical power with solar, during peak power.

A average house would need something like $16,000 in Tesla power-walls for a single day's power use. That's not anywhere near enough... and sadly, you will probably only get a few hundred, to maybe a thousand charges out of the battery... and then you have a $16,000 brick... So 3-4 years at best? Few have that kind of money, and that's just for energy storage... and not even enough of it for a few stormy or cloudy days.

Its something, but we have a long way to go. It might be better to focus on sequestering carbon with massive biomass seeding ( algae, plants, plankton, reforestation ).

So, don't be so harsh. What do you expect them to do anyway?