Jewel of the North, formerly know as vincegetorix
This.Elves live so long that over the course of their lives they will see the world change and change again many times. To them trying to "conserve" society in a particular state may seem like a fool's errand.
I'm lucky to spend a lot of time with a bunch of 100+ years old ladies as part of my job, and most of them arent exactly conservative...and most of them are nuns. They have mostly given up on trying to keep up to date with everything, but pick a few elements of each new generations they like and just ignore the rest. So I'd call this '' forced selective progressism when faced with the inevitability of change ''