I wouldn't fall as short as concluding that is an idiology promoting genocide, since inferiority spans above race and ethnicity. It is the inherent common ground of being human.
Transhumanism is promoting more then just genocide. To transcend our humanity it wants to rid us of it completely.
Transhumanism is an ideology with the goal to move the human common ancestor point further into the future.
Genocide is just one of a multitude of tools for this.
Transhumanism is the fevered dream of people who do not grasp the limits of our technology. People who think we are just 100 or 1000 years short of mastering gravity and bend it to our will. People who think we can genetically construct the perfect human somehow. Really? Have you ever seen our software mess at all?
It is a dangerous ideology, that denies our most inherent human trait of being a failure. Btw. the failures and inferior people have been the ones, who improved our technology, science and so on. Take 10 software developers or engineers that are any good and throw something at them. Those who scream or try to protect their equipment are the brains.
Transhumanism is oblivious to this simple evolutionary trick of cooking up genius from a pile of inferior slime.