Hinduism and Shintoism do have gods, they're simply not dogmatic in the way that the Abrahamic religions are and they don't proselytize like Christianity and Islam do.
If the old pagan religions of Europe had survived into the modern day instead of being supplanted by Christianity, there's a good chance they would've ended up resembling modern-day Hinduism and Shintoism in a lot of ways.
Especially since Hinduism is rooted in the old Vedic traditions, which have a lot of cultural similarities with a lot of other Indo-European polytheistic views.
Otherwise, you're spot on. Atheists tend to have a massive hate-boner for Christianity since the movement largely started in countries that were traditionally Christian.
The "New Atheism" movement of the 1980's-2000's was largely a backlash against the Religious Right and this is where a lot of the guys like Dawkins and Hitchens came from. The SJW intersectionality movement was heavily rooted in the ideas of New Atheism before becoming more immersed in contrarian leftism.
The Atheism+ movement of the late 2000's and early 2010's was one of the earliest SJW groups out there, and IIRC, it was one of the largest and most visible in the pre-Occupy era. Prior to 2011-2012, the SJW ideology was mostly confined to college campuses, Tumblr, and the punk subculture. Atheism+ was the outlier and tried to hijack the New Atheists as a whole, leading to the "Fedoras vs. Dangerhairs" schism in modern atheist circles.
As much as I hate the fedora-clad euphoric atheists, I'd say they were the lesser of two evils and I'll respect them more if only for being more consistent in their criticisms of Islam. The only reason why SJW atheists are pro-Islam these days is because the Christian Right opposes Islam.
