This is a good point for cultural issues, but the refusal to carry pro-environment ads can't be defended that way. There are no "both sides" to the issue.
> But do republicans run ads trying to say climate change isn't real?
They used to. Now they just say that the EPA is killing jobs or whatever.
I don't think it matters in this case. My point is that it's not a culture war. It is not a political decision to decide to allow ads that talk about climate change.
I wouldn't be upset if they ran the Republicans' ads too. It just can't be considered a matter of opinion either way.
If you're trying to convince me of something, I must not be on your side. And even if you think climate change is a thing, there are differing opinions on how to address it, and those obviously have political components to them.
