Say what you will about Trump, but you have to admit he's charismatic...in a bad sense. Republican primaries were all about him being the center of attention with the remarks and banter that caught everyone off-guard.
Trump's vengeful, bilious and vulgar behavior appeals to the American anti-establishment zeitgeist. People like it because Trump gives voice to the contempt they feel for modern culture, political correctness and the "status quo."
Zuckerberg, on the other hand, may not be able to spin his negatives into positives quite as handily.