Pose runners change speed primarily through changes in cadence
Speed is primarily controlled by changing the angle of the lean, and cadence is fairly consistent at about 180 steps/min. There is a point, usually when sprinting, where increases in speed are also accompanied by increases in cadence.
Pose runners land on their toes
Pose runners land on the ball of the foot, not the toes.
In Pose running, the heel is never allowed to touch the ground
Pose running puts no restriction on allowing the heels to touch the ground, as long as the ball of the foot touches first. However, the faster one runs, the less likely one is to touch with the heels
Pose Running is all about landing on the forefoot
The forefoot landing is actually a very small part of Pose running technique. In Pose the forefoot landing is achieved by doing everything else correctly. Pose runners don't seek to land on the forefoot, they land on the forefoot because it is a natural extension of performing the technique correctly.
Pose technique is exactly the same no matter what speed you are running
This depends on what is meant by "exactly the same". The technique is the same, but the amplitude of the movements changes depending on how fast one is running. The height of the Pull and the angle of the lean do change as the speed changes, but the runner is still performing all of the same actions.
Pose breaks the laws of physics
Most people who argue this, are simply ignorant of what Pose Theory actually says. I recently addressed these misconceptions in my post Pose Theory - Three Primary Points of Confusion.
Scientific studies have "proven" that Pose is inefficient
This argument has been based mostly on one deeply flawed study that was published, and one other deeply flawed study that was never completed. Both of these studies were designed and run by the same researchers.
Unfortunately, and not surprisingly, the published study has been widely misinterpreted by many people without a scientific background. Sadly it also continues to be widely misinterpreted by people who should know better. I've addressed the flaws of this study in my post A Critique of One Study of Pose Running Technique.
It is also unfortunate that many people are using the word "proven" when talking about one scientific study. I can understand this from people without a background in science, but it's really startling to see this from people who have a Ph.D or an MD or even both. I've commented on this previously in my post The Use of Scientific Studies in Blog Posts.