I'm not defending Trump here, but do you really think that Katy Perry and Kanye are smarter than the business school graduate? Maybe about the music business, partying, and fashion, they've got him beat. Celebrities are generally better off not opening their mouths about politics. Personally, I wish this particular celebrity President had stayed home when primary season rolled around.
Gabbard isn't a terrible option, but a Representative who has only been serving since 2013 has a weak resume compared to many Senators or Governors.