Oz was a bad candidate and everyone knows it. Politics is about storytelling first and foremost. This is why Clinton beat Bush, why Bush "beat" Gore, why Obama beat McCain, and why Trump beat Clinton. The "potted plant" had a better story as a local politician who cared so much about his own failures as a mayor (a position he won by a single vote!) that he carved those failures into his arms. Remove all the partisan politics, and that's a compelling story. And that's to say nothing of all the "ha ha tall man" memes. What story exactly did Oz bring to the table beyond "I say the right things and Trump endorsed me but I'm also a coastal elite carpetbagger who clearly doesn't understand grocery stores"?

Never forget that always always, what is off-putting to you will be appealing to a significant group of others. Humanity's broad like that.