A minor it's legally a kid even if some guy at 16 has nothing to do with an actual kid aged 10-11. The goverment shouldn't do what the ISPs should have been doing if 14yo get smartphones: locked down DNS' -no porn, no gambling, no violence, no AI-, and browser settings plus no permissions to install any software modulo a curated set for everyone at F-Droid.
With no smartphones until they hit 14-15 you don't need no stinky 1984 like laws; ISP would just comply with restricted DNS' per device and that's it. Ah, modern wireless networks such as the ones from town halls and the like? These should already have restricted DNS' for porn and the like.
Next, a PC it's a totally different device, you as a parent should be the accountable one and not the goverment. Your kids want to set a Minetest and some private server to play games and chat without groomers stalking them? teach them.
Enforcing computing stuff it's impossible, with libre software anything can be a general purpose computer. A PSP with a bluetooth keyboard, a PocketCHIP, any smartphone, even the mentioned Amiga FPGA computer, where can connect and use far more modern services than anything you would expect in 1994.
