In most focus groups with persuadable/swing voters, independents, and even soft partisans, people aren't able to articulate why they dislike Biden and the reasons for their disapproval of him often boil down to one-word answers and broad vagarities. This dynamic doesn't exist with virtually any down-ballot Democrat save for a few particularly polarizing ones and is unlike what we saw in the Trump, Obama, and even Bush years where people were able to give a laundry list of the President's offenses without even having to sit and think about it first.
This obviously isn't true of Republicans who dislike Biden because he's a Democrat, or the corner of the Democratic base that has issues with him from the left (right now manifested through Gaza). But it's the primary reason why down-ballot Dems are much more comfortable in their positioning right now than Biden is.
This dynamic tells me that this kind of lines up with what we see with the 'somewhat disapprovers' situation - There may be quite a lot of people who are not huge fans of Biden, but there's a good chunk of that disapproval that is relatively soft, and that seems like something he can work with.
It also just speaks to the bigger issue of a chunk of people who dislike Biden for unknown reasons, just like ~vibes~ or they feel it's ~cool~ to dislike him or something. I find IRL that a lot of is more ambivalence than anything (don't love him, don't hate him, it's just kind of meh) which again is much more workable than with the passionate hatred that Trump, Obama, etc elicited from some
