Any company that's paying $10M to a spokesperson will have (maybe I should say "should have") a lot of employees dedicated to that spokesperson and the campaign. They might have a clawback clause if the spokesperson shows bad judgement, and can also get some additional good marketing if they are proactive in distancing themselves from their Kanye-esque spokesperson.

So I guess, like you say, there is a quality control process regardless.

I think the larger issues are probably the decisions of the pre-seamstress process employees. Bad choices in materials or cost-savings measures can turn off customers.