Agreed... in the end, the "climate change" message is really about pollution... so should just talk about what can be its' own isolated issue that everyone sees, recognizes and cares about.
Doom spreaders sound like quacks in general. It doesn't matter if it's Satan or Climate change... it just breeds skepticism. Keep the message on message. This is why a lot of people stopped/don't support the EPA and the Green movements.
You can see, smell, taste and feel pollution. It's bad.. and even then, it's really bad in places that we frankly don't control. And we're shipping our waste overseas to be dealt with corruptly or worse, not at all.
In my lifetime, the Grand Canyon went from being able to see across well on any given day... to a haze the obscures the other side... rolling in from California.