Respectfully snipped for focus.
I agree with your post 100%. As I associate the voice with the newer sketch and listen to it over and over, it brings forth the following speculations for me.
"Guys". Immediately after the lengthier sound sample was released, and the word *guys* was added to it, I thought *familiar/familiarity*. I know many of you have offered up your own personal experiences with hearing, or using the term *guys*. However, staying laser focused on this particular use case, and attempting to remove the lens of our own personal experiences, it sounds to me like he is addressing these girls with not only authority, but *familiarity*. Albeit, these girls might not know him by name, but perhaps to some degree by sight. We don't know if there is any reference by the girls to recognizing him at all. We only have the brief sound sample to go by.
Expanding on this speculation, where might these girls know this Perp from, and why would they respond compliantly to his directive? We know that girls in particular, are socialized to be obedient, polite, and demure around adults. In addition, we have the added layer of responding to authority, regardless of age. The girls were walking where they weren't supposed to, and the Perp might have positioned himself as a Park Authority of some sort; bridge police. And of course, he could have had a weapon pointed at them to gain immediate compliance.
Yet, I think the "guys" is really important here. It's something a teacher / coach / referee would say to a group of kids. When I think of these two girls and who would have access to them, I keep going back to their sporting activities. The Perp could be a volunteer who supports the school's sporting activities, a part-time coaches assistant, a parent, or even someone like this from an opposing team they play against.
The Perp seemingly knew the girls were going hiking on the bridge, and tracked them on a *day off from school*. Either he had a day off from school too (either as a student or employee), or he took a sick day. I think it's the former; I speculate he is attached to the school system in some manner.
I strongly speculate the hike on the bridge that day was purposeful and prearranged. Others knew that girls were going to be there. One of them must have blasted that out on social media, and the Perp jumped in to action.
So, in summary, if forced to narrow in on my best speculation of who this Perp is, I'd say it's someone 16-19 years old, had the day off from school, and perhaps is a part time assistant coach or camp counselor type.
As usual, this is all amateur opinion and speculation *guys*.