This comment isn't incorrect, but the context that you're speaking of is a bit categorically different than what OP's question seems to be getting at.

What I mean by this is that the difference between so-called "Reddit atheism" and "regular old atheism" is being observed here less as how both group's views as atheists differs from Eastern atheism and more as a sociopolitical difference instead, with the former being seen as far more reactionary, smug, and what people would even call a more "militant" form of atheism, depending on how you use that word. The latter, on the other hand, may refer to "I really just don't give a shit" kind of atheism or, seeing as how we are on Hexbear, atheism applied to leftist, more specifically Marxist and materialist, schools of thought.

To give a goofy analogy, I find that this would be like a person asking, "What's the difference between vegetarianism and veganism?" and someone responding, "I don't see a real separation between those two because if you compare it to something like fruitarianism [a fringe diet only consisting of fruit], both vegetarians and vegans still allow for the consumption of things that aren't fruit, so there's no real difference between the two."