This is huge. Cory Booker is making great moves. My opinion of him is going up and up. And no, health care isn't a "universal right", but everyone should have access to it, which is why we need Medicare for All
I think he's going to end up being totally eclipsed by Kamala Harris, who has all of his pros and very few of his cons, and generally just seems to have a better political sense of direction.
Cory Booker is way more charismatic than Kamala Harris, and unlike Harris, has actually won tough election battles. Of course, you're right that Harris will win the nomination (provided Tulsi doesn't run). I've been saying that for a long time.