If there's a shift in focus here, it's that we're sort of going from "Make inferences about Michigan/Wisconsin/Pennsylvania based on results from other states" to "It's close enough to the end to actually try to count the votes there."
This is especially so in Wisconsin which is faster to count than Michigan and Pennsylvania. You'd think that Biden was in pretty good shape in Wisconsin based on his winning Minnesota plus his large leads in pre-election polls. But it's not quite exactly known what's out there beyond a lot of Milwaukee absentees, which should make the race much closer but may or may not put Biden ahead.