But we can’t focus on halacha as a way to decide who to look down our noses to. If someone who doesn’t cover their hair is sick in the hospital, if someone who shakes hands with women is in need of food, if someone who does not adequately cover themselves is in need of direction we are obligated to provide them. We are obligated to be respectful. We are obligated to say hello and greet them. We are obligated. We can focus on halacha when we chose neighbors and peers, when we accept meal invites and play dates, but when we are talking about the average community member who isn’t advertising open orthodoxy shiurim in their living room, we have obligations to respect and be respectful. Looking for reasons not to is a slippery slope.
(yes, this is per rabbinical direction)