So, having taken some time to think about it, here's my perspective on the election.
I don't think Harris lost because she "wasn't progressive enough". I think she lost because of sexism, in particular, and racism in general. It involves the attitudes of men and here's why I think the way I do....
I am of mixed race (father is Irish) and grew up in a Mexican-American family in East LA around Echo Park and later, when we bought a house, in City Terrace near Cal State LA. Now maybe some of you who grew up in similar circumstances will have had a different experience than I did, but I found many of the men in that culture to be exceedingly dismissive of women and their role in society. In addition, as Catholics, they (and this includes women) were very socially conservative. Later in life, I was a union founder, member, officer, negotiator, steward, and political activist so I knew a LOT about the mind of more white, male union members than I care to admit. Many of these are the conservative good old boys who care only about their paycheck and want the 1950s back where they drove nice cars and had people over for BBQs in the backyards on the weekend while their wives served them up lunch. My father, also a union steward, was, thankfully, an exception.
I haven't checked, but I believe women probably broke more for Harris than they did in 2020 for Biden, but these particular groups of men, I'm betting, broke even more strongly for an adjudicated rapist and convicted felon because, first off, many of them are troglodytes who honestly don't think women should be president, secondly, because they thought electing Trump would be in their best interests and the rights of women come second, and, finally, because, while sexually assaulting a woman isn't really good, it's just one of those things. If anyone thinks Harris staking out more progressive ground would have brought these men out for Harris, that's fine, but I heartily disagree. These are groups that make up a substantial part of the demographics in America and I'm ashamed of their attitudes towards women and their Stone Age mentality. They should be ashamed too (but aren't). I've criticized others on these threads for speaking of certain groups as monoliths because it's insulting to those in a particular group who aren't homophobic bigots so I want to be clear when I say the traits I'm describing are quite prevalent, but certainly not universal.
So, unfortunately, I think most of this generation of American voters really "aren't" ready for a woman president and it saddens me to see some of the attitudes among young men when I hoped for so much more from them. I think, if the Dems want to win in 2028, they are going to have to run someone like a Beshear, Newsom, etc. who has a nice smile and relatively progressive politics. Maybe things won't work out as badly as I think they will, but I am very much afraid of the next 4 years.