Technology is the consequence of the evolution of the human brain to grasp abstract concepts and use tools. Transhumanism is enabled by technology and therefore a continuation of evolution, albeit removed from "natural" selection.
Evolution means a species changing over time. Yes, Trans-humanism will make us evolve, but most of what we could do would not pass down from generation to generation, so the base human body would not actually be evolving at all.
This statement constitutes an extreme appeal to emotion, immediately using highly charged language to attack transhumanism without providing any solid evidence.
Cybernetic transhumanist is only one vision of transhumanism. Biological transhumanism, instead, is all about curing diseases, which in turn eventually provide amortality (i.e. no death of old age)