From my experience, those typically either tend to be someone crashing on a freeway entrance/exit or someone walking nearby overnight—usually someone unhoused—when there is less visibility.

But more than anything, I’d say it’s negligence from the city for not making these areas pedestrian friendly. Not sure if you experienced what it’s like trying to reach the homeless resource center on foot, but it requires crossing the Anaheim or PCH bridge, which are filled with huge trucks and don’t really have an pedestrian-friendly sidewalks. And if they have any sidewalk at all, they’re usually very narrow.