[comex]

Not even the most extreme LGBT activist would accuse people who used the name Ellen Page in 2019 of having somehow been insensitive for failing to have a crystal ball. That is as absurd as it sounds. At most someone might be asked to change the name if they’re actively republishing the material in question.

Your point may be more valid when it comes to political attitudes, in cases where the issues were known at the time but the Overton window has shifted since.