If you’re introducing yourself to me, I only need your name.
So you’re going to refer to John by John’s name exclusively? Sounds a bit awkward, but okay.
I’m tired of calling John, John, every time I refer to Join, but I wasn’t paying attention to John’s pronouns, so now I’m stuck until I have a chance to ask John, when I next see John.
Source: I’ve done this, actually. I hope I was more subtle.
Remember when we just conversed like human beings and didn’t have all this convoluted nonsense about worrying over pronouns?
If the person is called John, 99.9% of the time, you know what the pronouns would be, because not everyone is terminally online.