@danielle You're not alone. I'm still calling my old name 'deprecated' rather than 'dead'. My sister has been all up in my parents business about slip-ups, and I've had to correct her pretty hard about the level of offense that 'deadnaming' means for me.
@danielle And there are levels of deprecation notice, too.
1) Documented, with occasional reminder.
2) Verbal warnings on use.
3) Error messages.
@sysadmin1138 Oh, I like that a lot. There's a gentle suggestion that folks should start shifting away from it, but it's not forbidden and I'll support it for as long as feasible. Backward compatibility matters, damn it.