Storeys may not accurately reflect building heights, but it is still a useful metric.
When my friends ask me how tall a building is (like say Aura, as I was asked fairly recently), or how tall a building will be, they are looking for a number in storeys. I think so are the general population, that is the relevant information to them.
It's like how most people can relate to Fordite penny-pitching because a $25,000 rock in Cherry Beach is a relatable value to them, while a $2,500,000,000 subway in the suburbs is a meaningless value to them (even though it is worth 100,000 $25,000 Cherry Beach rocks!). Likewise, most people have been in a 50-story office tower or a 30-story condo before, can relate how tall that is, what the view from the window looks like or how long an elevator ride takes, etc. Meanwhile, most people are not birds and have not flown around a 220m building and couldn't tell you how tall a '220m building' is.