I don't mean to judge, but this sounds like a great way to make sure your kids become experts at circumventing your limitations. Take it from a kid whose parents didn't let him play RuneScape because it had witchcraft in it, and whose playtime of neopets was limited to 1 hr per day. I quickly became unusually good at both sneaking around the house at night to use the computer at 2am and also was surprisingly good at navigating Windows. We didn't have laptops or WiFi back then so that wasn't a relevant aspect, though.
In your household, I suspect I would be chatting with friends in the dead of night. I also suspect that I would, one way or another, manage to come by the WiFi password that you presumably use for your own devices.
If you're trying to raise kids who regard you as an adversary to overcome, I suppose you're on the right track.
I don't know, my kids are 1 and 2 so maybe I'll change my mind when I get there, but as someone who has made a career out of looking at a screen and spent most of the fun parts of his youth doing so as well, I plan to teach my kids how to self-manage screen time. My parents limiting my screen time just made me try to do everything in my power to maximize it, and I do think that made me quite a bit of an addict when I was a teenager (playing wow 6 hours a day every day on top of school and sleep). I only really learned to manage my enjoyment of screen time with my enjoyment of non-screen-time when I got to my last year of high school and college.
My wife, on the other hand, was never really constrained beyond her parents sanity-checking things now and then to make sure she wasn't getting into trouble. And she has always had healthier screen time management habits than me.