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.
This has some smell of a compliance issue. I.e. the company gets ordered to block stuff; the order states "this shall be blocked" and provides a list, and then the company does the simplest/cheapest way to comply which is literally checking for whatever was required by the order.
An ironic form of chabuduo.
https://www.chinaexpatsociety.com/culture/the-chabuduo-minds...