I believe it's the potential for rapid strengthening just prior to landfall that has folks concerned. High population density area--tough call at this point.
That GFS model track showing it bouncing off and following the FL coast to the north for a bit must have EOC's up and down the coast pulling out their hair waiting to see if a snap evac order must be given. I sense enough hurricane fatigue around here (Brevard) to guess that many will stay put for a "mere" category 1.