But your example just referred to someone by their old name. Not saying you’re wrong, but that’s a terrible example. Haha

Better example would be: Friend says, “Hey John, how are you! Remember when you used to go by Jim? Boy, those were crazy times back then.”

Is that deadnaming?

EDIT: my bad. Just re-read the OP post and your example is dead on. For some reason I had it different in my head. Never mind!

I thought you had to refer to a person by their old name for that to be the case, not just mention the existence of a former name. I could be wrong though.