Earlier quoted context omitted.
I guess it comes down to, why bother when the simplest solution works ? Make no mistake: As and when they get caught out doing such things, the sophistication of their implementation is bound to increase, in response to it. Money is no object for state-actors and mega-corps.
It may not be a state actor. I am the last person to defend the CCP, but as the chinese phones are made by companies that have lots of reason to fear the government, this may be proactive censorship added by the vendor to avoid getting in trouble, and it might even have been accidentally left in foreign models. We don't know the full story yet.
There's also all sorts of pretty reasonable whataboutism to be thrown about here but it's wrong either way.