Looks like it’s mostly popular media articles (e.g., Wired, Atlantic, Technology Review, etc.), with a scattering of AGU links; the majority of the pieces look to be about some form of solar radiation management. Didn’t see anything especially radical or crazy in the titles or links. Does not appear to have an obvious pro- or anti- bias in presentation, but the bulk of the linked articles appear to be broadly supportive of exploring the idea of climate manipulation.
As subreddits go, I’ve seen *far* worse.