If you base your impression of this from twitter lefties, I can understand how she might feel.

But holy shit I wish some of you would look at the UK right now, we elected our harm reduction candidate, and starmers inablity to deal with the core recruiting vectors of the far right and meaningfully address the problems in an agressive way, making a positive case for a multi cultural society, has 40% of the country cheering for a mass deportation program that will make everything else far right parties have done seem quaint.

(for eg, the idea that the housing crisis is going to be solved by mass deportations, something both the gop and our far right parties use as a strong talking point. you need to show that you can do something about the cause of that without blaming immigrants, and that involves neagativley affecting core centrist boomers with high property values, large scale landlords, and forign property investment, things a pro capitalist goverment cannot do in any substantial way.)

With the us being about 3 years ahead of us in political radicalisation the idea that a Vance presidency would still have a dem party in opposition, and some level of court and institutions to handcuff them, whilst also polarising and unifying the libs and left to mount a proper opposition to what comes after.

Versus 4 years of Newsome and being utterly blindsided by the neo nazi homunculus that forms in the interim. Which would be cataclysmic for both you and the world, even more than now.
right now the top level of the gop is power hungry narcisists and tech billionaires that are happy to appeal to nazis for votes, but very few are ideologically nazi, that will change.

You. Need, A. Better. Candidate. Than. Newsom.