TL;DR: Instead of measuring the percentage of homes that are owned by people who live there, they want to measure the percentage of adults who own a home.

Feels like an apples and oranges situation. The two numbers each have their own value but they’re measuring different things.

One is calculated based on the number of houses, the other is a measured based on the population of adults or households. Both measures have always existed. Trying to replace one with the other doesn’t seem right because they both have value for different reasons.