I speak for no one in particular, this is just as I recall it. Back in 25, the anniversary house had a section based off of ST, and it featured the bears as well. The Papa Bear character was (admittedly) a bit silly looking in the way he lumbered around, but also scared the bejeebers out of people. Eventually he became sort of a defacto icon for the scene, and people would look forward to him specifically when going through the house, and eventually led to people starting to chant for him (Bear! Bear! Bear! Bear!). The actors naturally took note, and would give a little dance when they heard the superfans chanting. It became a little call and response which connected people with the house that much more; made it personal for people to have a little 'wink' back at them from the actors. A spoof twitter account spawned, there was a quasi reference in Bill and Ted the next year, all sorts of stuff