Not at all (though there is certainly a small subset of... devotees). But he's definitely someone who has a huge audience.
You, on your end, seem to assume that people will on their own make a negative association between a brand and one of the tens or hundreds of outlets it advertises on- one they possibly don't even read- and consequently change their spending behaviour. I don't believe this is true. I believe that the only way a brand can get reputational damage for advertising in the wrong place (and possibly for just anything) is to be singled out and subjected to a shaming campaign by multiple media. Shrugging it off as "it's just how the people behaves, we need to protect ourselves" is wilfully ignoring the main actor in this dynamic, the other media and influencers directing the public opinion.