The truth is that the "Progressive Movement" isn't as popping as you think it is.
They're extremely vocal online and, because you can basically curate your own online experience for the most part, it makes it look like a popular movement.
But outside of no brainers like allowing gay people to have the benefits of marriage and equal treatment by the law for all people, most of the views aren't popular to most people.
High taxes will never be popular in the US because we never had outrageously high taxes like Europe and Canada. You try to take even more money out of people's checks and it'll be American revolution 2.0
"Free" healthcare won't work because people don't want to feel like they're footing the bill for people who don't contribute.
A large amount of people respect government, but don't trust them at all, so the idea of giving the government even more power over everyday life is a scary proposition.
This isn't me advocating for the system as-is, it definitely needs to be fixed, but progressivism is something you grow out of as you age and get more experience in the real world