it's not as important. PDA is for little kids and attention seekers. What matters is how well the person treats her in private. In public he should be protective, attentive and respectful.
Being loving and affectionate (to his wife) is a big sign of security in his masculinity. He doesn't need to show that to the world. But the way he said it is different. He shouldn't have to insult people to teach them something.