OP here, just chiming in to say that you are exactly right on my point and what my objection would be to that study. There is a distinction between the Internet and specific sites like 4chan, 8chan, Reddit, Youtube, etc. You can accidentally stumble onto hate on those sites. The hate there is both normalized due to the presence of that other content and can be framed in an enticing and seemingly logical way. That isn't true for the Internet at large. To repeat myself, you can't really stumble on to the Daily Stormer or be accidentally recruited into their ranks. The NYT's article I linked to in my first post details how that type of accidental radicalization can happen on Youtube.
And like you said, there is nothing internet specific about this distinction. The same thing applies if white nationalists are recruiting in the physical world. There is a lot more potential for recruiting new members at the local bar than their is at a KKK rally. I think some of us just want the bar owner to stop allowing those white supremacists to use the bar as a recruiting ground because they are turning violent.
And like you said, there is nothing internet specific about this distinction. The same thing applies if white nationalists are recruiting in the physical world. There is a lot more potential for recruiting new members at the local bar than their is at a KKK rally. I think some of us just want the bar owner to stop allowing those white supremacists to use the bar as a recruiting ground because they are turning violent.