Doesn't matter. They're not doing it to get people to see their ads, they're doing it to bribe Elon since he has actual political power now. Kind of like how oil companies buy ads on news media, even though you don't need to be persuaded to buy oil - it's to buy favorable coverage.
My electrical utility (PG&E) advertises all the time. Like what am I gonna do, not buy electricity? It’s so obviously just a bribe to the media companies.