"Anonymous. Exactly which part of that one walk do you consider wrong."
There are numerous posts her explaining that, so I'll retype only one highlight:
The moving leg is getting too far in advance of the body too soon. Amongst other things, this puts the dancer more off balance than she should be, as that unsupported weight of the moving leg in front of the body would shift her center of gravity too far forward of her standing leg.
I believe based on old posts that at the time Jonathan created these, he was in the habit of sliding part of his weight on the moving foot, and as a result the pictures show dancing that would only be possible that way.