Yes, but in that article Mr.Howe is warning against movement.
I think this is because his experience is military and not law enforcement/civilian.
Howe said in that article: "In short, make yourself a hard target. Most of the friendly casualties I observed were shot when they failed to use cover, or stopped in the open and not moving. This is also how I engaged most of the enemy that I know I got solid hits on. They were stopped in the open."
Movement off the X - the kill zone - is meant to make oneself a difficult target...to 'not' get shot.
Most movement has the common purpose of seeking cover. Being shot at – with real bullets - is a great motivator to move yo ass and not stand and deliver.
I believe a good part of SD training should be move-draw-shoot.
Fast or slow, just move. Hit or miss, just shoot.