Defender trying to take a charge starting to fall before contact

[so cal lurker]

Is there a matter of degree here?

The player that relaxes and falls back 6 inches before contact is not making anything more dangerous, nor flopping--he's preparing to absorb the anticipated hit.

The player that is halfway to the ground before contact comes is something else.

I wonder if some of the posts here are based on a different view of what the defender is doing.