Not sure how Biden can be at -27 and Walker is leading by +10. One of those things isn't true, unless a lot of Biden's disapproval comes from "he's not progressive enough".
It does.
Nationally, his "right-wing disapproval" is around 40% (note the closeness to Trump's essentially permanent approval rating of 43%). Anything above that is disapproval from the left, because he "isn't doing anything." That is to say, it's disapproval of Manchin and Sinema that has been misdirected toward Biden thanks to the stupidity of the American electorate.