That's a lot of hot pixels for base ISO! Could be the focus stacking intensified them. That camera can actually get a bit more resolution out of sensor movemen

That's a lot of hot pixels for base ISO! Could be the focus stacking intensified them. That camera can actually get a bit more resolution out of sensor movements, though the lens might be at its limit already, or focus was still a little off. edit: it's probably the glovebox glass.