To me, treating people like means paying close attention to what they have to say about their lives. Like it or not, some kinds of visible difference have a major effect on people's lives because of how others treat them.

We are slowing emerging from millennia of patriarchy. Insisting on pretending otherwise doesn't sound like treating people as people to me. It sounds like insisting that they conform to your expectations, which I think is pretty much the opposite of treating them as people.