Exactly, which is precisely the point. Notice the absurd lengths that had to be traversed to concoct criminal cases against Trump. Be it Smith, Bragg, Willis — all had stitch together utterly untested, novel legal theories to charge Trump. None of the activities described in any of the indictments even remotely rises to the level of criminality. Carrying out official duties is not a crime — no matter how hard Democrats try to make them crimes.
Re: 20 - I see the main issue in the Florida case as obstruction of justice. Expect Smith to put Evan Corcoran on the stand to try and convince the jury that President Trump attempted to obstruct the investigation.
As the alleged conversations between President Trump and Corcoran took place after the President was out of office, they are not protected by presidential immunity.