“..not many other inyanim have followed suit.”
Kashrus is in constant flux. Zmanim have been reimagined. Commercial Arba Minim has exploded. Brochos on food have undergone intense reinvestigations. The halachic concept of Khal is nearing extinction. Where have you been? Halacha in the Modern World is constantly in motion.
(Before we get sidetracked, I am not endorsing the idea that halacha is transitory.)