Well, I tried changing the question to make it more explicitly a comparative Jewish question, since apparently that intent wasn't clear, and I have now removed all reference to the specific political ideology as anything other than self-identification.
However, asking what about Jewish beliefs cause those who adhere to them to be more likely to believe things in other areas seems on topic to me.
If there was a study which shows that Orthodox Jews are less likely to believe in catastrophic anthropomorphic global warming* than Jews who are not of that religious affiliation (so reform, conservative, unaffiliated whatever) I would think it perfectly on topic to ask why.
I think the real opposition is that the concern is that the topic is contentious. That is not a reason in and of itself to close questions though. But I'm not really all that emotionally vested in this question. If it stays off topic, so be it. But I would appreciate a consistent explanation as to why. If I went back and looked, I could probably come up with 10 counter examples instead of just two, I'm just not vested enough to do it. (But here is one).
If the mods just don't want the question, OK.
I want to explain what I mean by that last line. There was a question asking for a product recommendation about which Beis Din to use in Monsey. That got pounced on so hard by the moderators it made my head spin. Closed as primarily opinion based, and then locked to prevent comments (I had started writing a comment before it got closed, and then ended up being the motivation for locking, I think).
Now, to me it is patently obvious that there was nothing more opinion based about that question than the many other product-recommendation questions that are open and are accepting answers. Rather I suspect it was a (perfectly reasonable) concern about a rapid deterioration into Loshon Hara, etc. that making recommendations about specific people's services would entail.
I suspect this is the (subconscious) motivation for closing this question - it expects a lot of attention on the politics, which creates endless pointless debate, and not so much on the Judaism.
I'm OK with that, but would appreciate if that was clearly stated, if that is the reason.
* An example that came out in chat