Ok, it’s a little thing, but come on. When you are walking down the middle of an empty sidewalk and you encounter a small group of people coming your way, you politely move to the right to give them room to pass to your left. It’s just considerate. And when the guy at the front of the group who has plenty of room to his right, comes up to you, he should move slightly to his right so that you can pass.
What he should not do is walk blithely on ahead, forcing you to move even further on to the curb because he is too self absorbed to move six inches to his right into the empty sidewalk.