IMO, a lot of people see the open carrying types to just be people cosplaying badasses. The type that has spent basically 0 time training to use it, outside maybe taking it to a range and firing off a hundred rounds. They see it as a gun to be stolen?
The only time I see open carry that seems to make sense in all of this is shop workers/cashier. I’ve been in stores that have a reputation based on what they sell to get hit by robbers, and the guy working is carrying outside his belt. Like a smoke shop or liquor store for example.