From the reporting and studying that's been done so far it seems like most people that wind up in this world get marginally attracted at first and then over time get sucked deeper and deeper into the more virulently hateful and violent edges of the ideology. My thought is that if you can sever the easy link between the on ramp and the end point people will still start over there but the jump from whatever weird subreddit or 8chan-alike to the violent side most people will stay on the clearnet.