> someone is going to say 'Hey fellow, are you okay?'

We might be thinking of different types of gatherings/meetings. Specifically, I was thinking of someone with a particular set of extremist ideals that get together for a monthly meeting with others with those same extremist ideals. Someone in that group would likely not say "are you okay" rather they'd say "hellzya brother!" or whatever they'd actually phrase it. These types of meetings are also known to have someone speak intentionally seeking to get a member to act as a lone wolf to actually carry out the comment you're hoping someone would tamper. Now, one doesn't need to go to meetings for that encouragement. They just open up whatever app/forum.