Cause I hope they do have a theory that connects to their personal values, otherwise they are just following blindly.
PS. did you just make up "factual belief"? I mean it is a tautology on many levels. But let's take it as qualified belief. Isn't that the root of religion? It's okay, we humans need to believe in something
Because they have some concern about the quality of life people experience in the future, independent of any concept of the final destiny of humankind.
> Cause I hope they do have a theory that connects to their personal values, otherwise they are just following blindly
I'm not sure what your point is, unless you are unable to separate the idea of having values from eschatological theory. While certainly these can (and often are) ties together in religion, values can exist without any eschatology.
> did you just make up "factual belief"?
No.
> I mean it is a tautology on many levels.
It can't be a tautology because it's not a proposition, much less one that is true by definition. You might mean to say it's redundant, but it's not that. A factual belief is a belief on a question of fact, as opposed, e.g., to a question of values.
No, neither factual belief in climate change (in general, or more specifically anthropogenic climate change) nor ideological belief in environmentalism is eschatology ("the part of theology concerned with death, judgment, and the final destiny of the soul and of humankind") to start with, and even if they have a weak correlation with atheism, there is no essential connection between them and atheism (they may sometimes have a common cause, in that both atheism and factual belief in climate change can be grounded in scientific rationalism.)
> And they do proselytize quite a bit.
Proselytizing atheists are disproportionately visible, because people that aren't trying to shove their beliefs down your throat are a lot less noticeable. So, sure, if you aren't an atheists, the people whose atheism you notice will be very disproportionately those who are proselytizers. That doesn't mean atheists in general are proseltyizers, and atheism has no unifying belief in the value of proselytization the way, say, mainstream Christianity does.