They had a reasonable expectation that the large increase in public expressions of Nazism would be juxtaposed with ads from companies who do not want to be asso

They had a reasonable expectation that the large increase in public expressions of Nazism would be juxtaposed with ads from companies who do not want to be associated with such content. So, they tested their hypothesis, and found evidence in its favor. They didn't hack, they didn't fabricate, they observed. And then, they exercised their free speech and free association, and showed this evidence to the companies in question (who clearly didn't like what they saw). What's wrong with that?