Brooks supposes that Clinton is not liked because she is perceived to be consumed by her public career. That may be part of it, but I suspect the bigger problem for her as a political figure is that she has been on the national stage so long that most of us are just sick of seeing and hearing her. Familiarity breeds contempt, and Americans are very familiar with Clinton. As Brooks points out, she has been in “public service” for decades, but then most Americans nowadays don’t consider that to be admirable or praiseworthy. When they consider what Clinton has achieved during that time, they are probably even less impressed.
Sanders stunned the Democratic establishment in 2016 with his spirited challenge to Clinton, and his campaign helped lay the groundwork for the leftward lurch that has dominated Democratic politics in the era of President Trump.