The Earth "as we knew it" was destroyed. A better way to think of it is this: Earth was a creative medium through which those who incarnated on it were offered a set of potential experiences and lessons. Those potential experiences and lessons are no longer offered, here. This is the result of a "Harvest," if you will, in which many who had either consciously or subconsciously-enough experienced and learned all they had set out to on Earth are now experiencing the "next level" of Earth.

The Earth you occupied previously is no longer capable of being accessed by those who have transcended (which is everybody in this dimension/distortion/density).