You can achieve the same more easily using Screen Time, and having a trusted friend or partner enter the screen time passcode. Still possible to override with your Apple ID, but this is a significant enough speed bump that it works (for me anyway).
Basically in "downtime" mode all the time with a few "Always allowed" app. One thing is, you're phone (and it's browser) is pretty damn useless. Overtime you realize that a lot of things you need to lookup don't need to be looked up, etc but it can be frustrating at first.
Edited to add: for some reason, time limits never worked for my kids (they could always override them with one click). That's why I had to opt for permanent downtime.
Hah! Says something about my self control!
Yeah it's usually trouble once a week. I recently needed to pay for parking using a QR code had to finish it in the 1 minute I had. Another appointment asked me to fill some online form and their reaction when I said "my phone is blocked from the internet" was funny. Turns out they still have paper forms when needed.
Huh, that's weird. Seems to work ok for mine in limiting their iPad use. They can request more time and I can decide to grant it or not, I get choices of 15 minutes, 1 hour or all day.
While we're at it, I wish there was a 30 minutes option! There are many situations where 15 minutes is too short, and 1 hour is too long.
In case your kids hack the router you know that they have Kevin Mitnick skills :)
my wife has the password for my screentime, but i can't send her a request if we're physically apart. which means i'm out of luck, or she has to share the actual code with me, which then requires her to change it (and remember the new one)