A lot of pundits that were center-left in past years fall into this trap, and normalize extremely right-wing positions these days because of it. They are stuck in an media and information environment of politics and, lacking many core values to guide them, they navigate to the middle of the media that they consume, assuming that the truth will be there in the middle just like it was in the past.
This is a fundamental problem and one reason we're mired in this culture war. Social friction is caused by jostling based on group membership, and there's no common values-based scaffolding we can use to collaborate in building a better way.
I used to scoff when told to say the pledge of allegiance as a young person. Now, the closing words "liberty and justice for all" sound quite aspirational.
And also practicality. Extreme people are highly motivated to push their agenda, and that requires a party. They adapt and find a way to participate, one way or another. Often simply by ramping up awareness of the opponent party's inevitable extremes.
The real question is: how do the moderates in a party operate, and are they currently tolerated and reasonably well represented within the party.
(I am using extreme here to mean a lack of operating in objective reality, or a strong will to divide who "matters" from who doesn't. Usually they go together.)
In a representative democracy it doesn't matter what you believe only what the person you vote for believes.
However, IMHO this doesn't really matter because in the US both the left and the right tend to score high on authoritarianism on the freedom vs. authoritarian axis on a two-dimensional political spectrum view if you look at their actual policies and views they defend. That even includes the almost nonexistent US far left. Strongly anti-authoritarian viewpoints are extremely rare in the US. Even self-proclaimed "libertarians" in the US tend to have fairly authoritarian views when you press them about it, they're usually merely anti-federal-government pro business right-wing neoliberals.
Plenty of people wouldn't even count her as "left".
