The reason she’s scary, to me, is all about branding. Arguing actual policy is lost on 90% of the population.
We have a country where a great many people wearing MAGA hats will say they hate Obamacare, but don’t want to lose their insurance card provided by the affordable health care act. That is the absurd reality. If you can brand Obama, who was an excellent communicator to the point that simply adding his name to a policy flips it’s approval to that degree, this girl is a huge net negative. You can’t get rid of Trump without winning a coalition of middle aged and older white midwestern voters left behind who traditionally voted Dem and upper middle class suburbanites generally embarrassed by Trump. That her policies might help that first group in many cases will be missed by that group. The second group isn’t that political. They can go either way and talk of 70% tax rates and celebrating job losses will more than turn them off. She’s basically designed in a lab to hurt the voters Dems need most to win, and the right will expertly inflate her importance and essentially put her on the ticket despite being largely irrelevant.