According to Success Criterion 1.1.1 (Non-text Content), all non-text content, including images, should have a short text alternative, and (if required) a long text alternative. Technique H2 provides a method for remedying a situation where two links, one with an image and another with text, have the same text represntation. This results in screen readers "stuttering" over the link, when they should instead be presented as one link.
This is an incorrect application of this technique. Although the duplicate text has been removed, it leaves the image with no alt text, which means it will be ignored. This results in a link without link text, which is undefined in terms of what assistive technology may do - for example, they may read the link location.