I think the problem I have with the subterfuge theory is that nothing else we have seen from this case has suggested any degree of complexity, planning or forethought beyond 'watch a house of young people on and off for a while, late at night, then break in while they're sleeping and kill them'. This wasn't a diamond heist or a confidence trick. It was brutal, sloppy, and in my opinion, solitary.
I completely get where you are coming from, and I agree, but I do believe there has been some cyber subterfuge at some point in BK life. I feel he has an online persona that has been very in the thick of it. I wouldn't be surprised if he grew more confident from it and used it in a local student setting. I am at the tail end of Gen X, and I grew up with a technophilic parent who always had the latest, most expensive mod cons. So I had the chance to experience computers and consoles before many of my peers. I have also seen my five kids grow up since the mid '90s, and I have seen how technology has shaped them.
BK is nine months younger than my eldest child and just over a year older than my second eldest, the same age range as Justin Bieber. A millennial.
KG is the same age as my oldest-middle child, 21 this year.
Gen Z, I have another Gen Z, too, 18 this year.
The two Gen Z of my children both grew up with the internet in their homes and lives and just got more involved with it as they hit adolescence. They both knew how to use a computer and mouse at age 5.
I have a Gen Alpha, too, but that's not relevant here.
BK is a millennial, and the four victims were Gen Z.
In terms of cultural advancement over the past 20 years, they are different.
The victims were from selfie culture, posting EVERYTHING online for likes, views, etc.
BK exploited that.