Decline

The tradition served some unmentioned purpose or had a broader holistic connection which was lost.

Or

The zeitgeist which changed things was toxic even if the specific change wasnt

You can tell a lot about a society by what it decides is good, or how it decides it. Generally, the reactionaries are right. And even positive changes in modernity come out of some irrational zeitgeist. While adhering to tradition, recognizing might is right, and obedience to lawful authority are good