Maybe I'm old school, but I respect the office of the President, even if I don't like the occupant. I expect the president to act in accordance to his office - not like the rest of us might. We might be petty, mean, bullying, dishonest - but not the President, and that applies to whomever is in office so no but but but's please. Every job has standards of conduct within it, and that includes the President. Just because he thinks he can act how ever he wants because he is the most powerful person in the country doesn't mean he SHOULD and it doesn't mean we should not call him on bad behavior. When the powerful "punch down" on the less powerful, it's not "self defense", it's bullying, or worse. Obama learned, the hard way, early in his presidency, when he attacked the police officer's behavior in an incident involving a black man and held a beer summit as a means of apology.
When a restaurant kicks someone out of their establishment (Huckabee) because of her political position - that's wrong. It's not illegal, but it's just bad behavior, and a lack of class. Their customers will hold them to account with protests, boycotts etc and that is appropriate. What is not appropriate is the POTUS stepping in, and using his platform to attack a private business. THAT is bullying and an abuse of power. The president represents ALL of us and works for ALL of us. He should treat his office with dignity and class EVEN if those under him do not.
Does he have a right to speak out? Sure - we all do, it's called free speech. But does that mean he SHOULD? That he SHOULD attack the little guy? Regardless of whether they are celebrity or secretary - his position is still far more powerful and influential. Using his pulpit to turn his base AGAINST his own citizens, to encourage attack, is...close to evil in my mind, and rather scary. When he called the media "the enemy of the people" that sent chills down my spine. When he attempted to use his position to go after Amazon and it's contract with the Post Office because he hates Bezos, that is disturbing.
Every president has been attacked by the media, but they've learned to be thick skinned to a degree, they have to be. Public figures learn to be. Yes, Trump has had more than his fair share of negative press coverage (but, he also has Fox solidly on his side defending his every move). His own antagonistic and sometimes bizzare behavior makes it hard for the media to report positively. Should they ignore his tweets? His words? His actions? The discrepencies between reality and his statements? That poses a real challenge for media coverage of the POTUS. In the meant time, Trump uses his pulpit, the most powerful man in the country, even world, to attack the little guys that say mean things about him. He has the right, but is it presidential?
No.