It will be interesting to see if Trump gets questioned more closely on that in the days to come. If he cannot walk the walk, his talking the talk becomes suspect.
If it’s an issue to his credibility in support of gun rights, I’d want to know to more about the policies his businesses employ to ban firearms other than a few snarky soundbites.
Understanding that gun free zones are a liberals idea of myopic utopia, there can be reasonable and legal justification to ban firearms at a place of business and still be a strong 2nd amendment supporter.