There's no conflating. Scientism-types being atheist (or anti-theist) seems to be a pretty universal pattern in my experience. If I called someone a bible-basher, it wouldn't be conflating to say they're a Christian - it's a prerequisite. It's also a stereotype, but if I were to call somebody a bible-basher you'd (presumably) know the kinds of character traits I was implying (sanctimonious, primarily).
But this feels like describing the colour blue - if you don't already know what it is, being on Hacker News, I don't think I can help you. Familiarising yourself with the philosophy of science (like Karl Popper's ideas for a start) and then looking at the way that many redditors and HNers talk about science (especially pop-science in astronomy and physics) or treat whitepapers, "new study finds" journalism etc would make you notice the difference.
I'm still not really sure what that's supposed to mean or why it's not conflation, many Christians that I've met have wildly varying views on the bible. I also don't see what the difference here is supposed to be -- in general, there is not a lot of fact checking happening on public social media, and if there is, it also has a lot of its own bias. I don't see that as being specific to comments on scientific articles or evidence of any kind of "scientism," it's just the usual confirmation bias.
But this feels like describing the colour blue - if you don't already know what it is, being on Hacker News, I don't think I can help you. Familiarising yourself with the philosophy of science (like Karl Popper's ideas for a start) and then looking at the way that many redditors and HNers talk about science (especially pop-science in astronomy and physics) or treat whitepapers, "new study finds" journalism etc would make you notice the difference.