For chronological accuracy, I have been using the old name and gender when referring to a past, pre-transition person, and the new name and gender when referring to them generally.
But I had a realisation that this could be considered rude. I’d like to hear from some trans people on their opinion.
Depends on the trans person. I tend to degender my past self. Which is actually accurate because before I identified as a girl I didn’t really identify as anything with any degree of passion so I consider my past self to be agender and use they/them pronouns for them