At some point i had multiple older iPads with perfectly great screens, and i wanted to use them as "hubs" for a home setup to control various things, another option was using them as secondary screens, or maybe just give them to a kid.
You couldn't, they were simply to old for the new IOS update, and almost all apps including browsers requires the newer IOS and update automatically without asking - essentially bricking them on purpose.
Anyway i ended up giving them to a "safe e-waste center" but i'm sceptical they'll actually be recycled.
I think locking down a device should be illegal especially e-waste considered, and if there's some reason not to, then it should at least be opened the day official support ends so the device can be used to watch videos/games for kids/whatever.