And don't forget West Michigan.... Whitmer won Kent by 10 points (versus 3 in 2018) and shaved her margins from 2018 in Ottawa County. That's a LOT of vote out there.
From my perspective, the thing that should concern the Michigan GOP is that, outside of Macomb (which also isn't a guaranteed basket of votes in every election, as 2022 proved), the parts of the state where they excel in and/or where trends favor them (ie. Tri Cities/Flint) are all areas where population decline is particularly pronounced in the state.
After 2016 and this election, I'll never write them off or assume demographics are destiny, but surface level it looks pretty grim at the moment.