At least Southwest thought that they had the AoA disagree light enabled, and they released a shockingly brutal press release calling Boeing liars over the issue. [0]
Beyond that, critical safety features are not supposed to be charged add ons. If 10,000 extra people died because they didn’t pay for Ford’s airbags, who would be at fault? Now imagine that all of those people thought they had airbags because the steering wheel said “airbag” and the brochure talked about airbags, even though they were turned off by software. Who would you blame?
0: https://www.cnbc.com/2019/04/28/boeing-didnt-tell-southwest-...