It’s already starting half-way down that line of inference, at nihilist and hypocrite. Considering it’s a western white nihilist account it’s not that large of a leap to white chauvinist (that’s the majority of the West).

If you assume this is true about an account that (as far as I can tell) exists to post generic space pictures, you could could just as easily make this argument about any tweet. It's on an American website, so it's probably a white American poster and America's fascist, so the poster must be fascist, so the post is self-reinforcing evidence of the poster's white cryptofascism. Somebody posted about math? Bet they're dogwhistling about the rate of profit and how it must always go up at the expense of the working class. Picture of landscape? I don't see any people in that picture; must be an incitement to genocide. A painting? You know who else liked painting?

I think you're misattributing your feelings about a particular subreddit to the demographics of the United States. Reddit (and X dot com) as a whole aren't reflective of US demographics. Every US president in history has been a Christian. Fewer Americans would vote for a "well-qualified" atheist nominated by their own party for president than would vote for a Muslim across Democrats, Republicans, and independents. 70% of the US identifies as Christian, and the 20% that could be broadly be considered atheist plummets to around 3% if we're going by strict self-identification; that's the highest it's ever been, and its disproportionately younger generations with less political power. On US support for the Zionist genocide on Gaza, Muslims and black Protestants are the only groups with lower support for Israel than the religiously unaffiliated. US Protestants (evangelical and mainline, and excluding black people), Catholics, and Jewish people are by far the most likely to justify Zionist violence and condemn Hamas self defense.

"You have a moral duty to bully atheist nerds for their nihilistic immorality!" (the explicit premise of this post) is an attitude that's always been considerably more popular in mainstream American liberal society that whatever inverse you seem to imagine is happening. Add "socialist" to your list of things that are "poisoning our country" and you've got the makings of a generic bipartisan congressional campaign. It would take a pretty remarkable feat of mental gymnastics to attribute the US attacks on reproductive freedom and LGBTQ people to politically organized Kierkegaard fans, or suggest that the proletarian revolutions that liberated millions in the Soviet Union or the People's Republic of China were driven by people embracing faith in the divine and rejecting godless materialism.