CHOMSKY: The core part of anyone's point of view is some concept of human nature, however it may be remote from awareness or lack articulation. At least, that is true of people who consider themselves moral agents, not monsters. Monsters aside, whether a person who advocates reform or revolution, or stability or return to earlier stages, or simply cultivating one's own garden, takes stand on the grounds that it is 'good for people.' But that judgement is based on some conception of human nature, which a reasonable person will try to make as clear as possible, if only so that it can be evaluated. So in this respect I'm no different from anyone else.
You're right that human nature has been seen as something 'regressive,' but that must be the result of profound confusion. Is my granddaughter no different from a rock, a salamander, a chicken, a monkey? A person who dismisses this absurdity as absurd recognises that there is a distinctive human nature. We are left only with the question of what it is - a highly nontrivial and fascinating question, with enormous scientific interest and human significance. We know a fair amount about certain aspects of it - not those of major human significance. Beyond that, we are left with our hopes and wishes, intuitions and speculations.
There is nothing "regressive" about the fact that a human embryo is so constrained that it does not grow wings, or that its visual system cannot function in the manner of an insect, or that it lacks the homing instinct of pigeons. The same factors that constrain the organism's development also enable it to attain a rich, complex, and highly articulated structure, similar in fundamental ways to conspecifics, with rich and remarkable capacities. An organism that lacked such determinative intrinsic structure, which of course radically limits the paths of development, would be some kind of amoeboid creature, to be pitied (even if it could survive somehow). The scope and limits of development are logically related.
Take language, one of the few distinctive human capacities about which much is known. We have very strong reasons to believe that all possible human languages are very similar; a Martian scientist observing humans might conclude that there is just a single language, with minor variants. The reason is that the particular aspect of human nature that underlies the growth of language allows very restricted options. Is this limiting? Of course. Is it liberating? Also of course. It is these very restrictions that make it possible for a rich and intricate system of expression of thought to develop in similar ways on the basis of very rudimentary, scattered, and varied experience.
What about the matter of biologically-determined human differences? That these exist is surely true, and a cause for joy, not fear or regret. Life among clones would not be worth living, and a sane person will only rejoice that others have abilities that they do not share. That should be elementary. What is commonly believed about these matters is strange indeed, in my opinion.
Is human nature, whatever it is, conducive to the development of anarchist forms of life or a barrier to them? We do not know enough to answer, one way or the other. These are matters for experimentation and discovery, not empty pronouncements.