The actual explanation is simpler and more crass: It's about what sells to the target audience. At least for large campaigns, these things are thoroughly vetted.
If you're uncomfortable with some aspect of an ad, you aren't the target audience.
The activist Left in the West is grass-roots censorship, which is a completely different problem from a top-down, military-backed authoritarian regime. Granted, the former seems hard at work trying to produce the latter.
They described simply cutting off a stream because of the language spoken.
Same shit, different process.
Even disregarding your false promotion comparison, what about the other side?
CCP 'promotes' (actually carries out) the brutal persecution of non-Han and specifically Uighurs in part facilitated propaganda ('ads')
US corporations are not forced by the government to include for instance only one community or exclude another in their communications.
Us corporations are not de facto owned by the government and do not have the same goal of consolidating power to maintain the CCP's (and increasingly just one man at the top's) grip over its own citizens.
In the US many spend lots of money lobbying to keep the government out of their business!