If words meant things, we wouldn't have this argument twice a week. Unfortunately, it's an unenforceable suggestion - people use words as they please.
I prefer to think of this as storing something in three geometric dimensions and two buzzword/marketing dimensions.
As to the time-as-a-dimension thing, was there ever anything so completely wrong? Do things change over time in the second or fourth geometric dimensions? Whoops.
I have to learn to admit to myself that the dimension discussion, like the "what's a planet" discussion, has become political and therefore entered the realm of the perpetually insoluble.