Earlier quoted context omitted.
I've never understood this as a design decision -- why does Google allow companies to block updating of Android? Presumably the idea is 'block updates to force hardware sales'? I can't update my Honor, I think it's the service provider (the phone was on contract) who block the update, but it was easy to update (both Android and EMUI) using an app in the Google Play store to a full version higher, but whoever created…
It hasn't made any sense to buy phones from the company that provides your mobile phone service for years, especially now that a "phone" isn't in any meaningful sense a phone at all with many people never making or receiving any calls. They shouldn't be any more involved in what phone you use than your ISP gets to pick whether you use a Mac or PC. Sure if you want to use a 15 year old phone you're going to need to fi…
A misbehaving device can cause unreasonable load on the network, a disruption to other users, or at least interruption of the service on your device.
When Apple does screw up and iOS update will leave you with no data, the operators will attempt to make it work; they won't do that for every random manufacturer though.