Why exactly do negatives entities inevitably need to switch polarities?

[Diana]

On an energetic level it becomes impossible to exist by shutting out other entities' thoughts, emotions, and their very being. The spiritual nature of 6d energy and on, carry connectivity inside them. Its inevitable. Therefore the negative entity must oblige by the nature of the vibration of the levels ahead it, and must accept all.

I think this is exactly what happens when a person's heart opens up enough to include (and consider just as important) other life forms and not just human life. And I hope this will happen in the transition to 4D.