Blackmailing is when you demand payment/value from someone in return for not revealing damaging information about them.
How are advertisers blackmailing Twitter?
How are advertisers blackmailing Twitter?
They sell medicine, people don't pick what medicine they get for the most part, their doctor does. (yes there are exceptions) The number of people who would push back against a medicine because "pfizer had ads next a twitter post with racial epithets" seem vanishingly small.