Its really creepy and intrusive. But at the same time, I can find really fucked up porn with literally zero effort.
I mean, if your kid has terrabytes of rough incest bdsm porn people will ask why you werent monitoring their internet use, but monitoring them like this feels like a different kind of weird.
Thats what I mean, how do you know unless you're either using this shit or searching the HDD. I was a kid back when porn was Jpgs traded on floppy disks or grainy 480x320 10 second realplayer clips.
Now I dont know what a healthy father/son relationship looks like because I never had one but it seems to me that knowing "Dad likes blondes with big tits" might be slightly less scarring than being left entirely to your own devices with no oversight and going down a rabbit hole of xvideos fetish porn.
Theres 2 kinds of men in the world. Those that have beaten their dick, and fucking liars. Maybe this shit is weird and creepy, and maybe they have had honest and open discussions about sex and he is trying to give his son healthy attitudes towards it.
If the knowledge was only dad's preferences in women, sure, mostly harmless. The damaging part of this would be the villianification sexual desire. You're telling someone that a normal part of having a body is wrong and you should feel shame for it. You're also thrusting the responsibility for the parent's impulses onto a minor.
I'm also not naive enough to believe that they had any serious, healthy discussions about sexual urges beforehand. This is the right, its just indoctrinating them onto the shame and guilt spiral as soon as possible.