At its most basic Kant stipulates that you shouldn’t do to others what you don’t want to be done to you: some exterior motive imposed on the thinking process!
The principle that you shoudnt do to others what you dont want to be done on you , is universal and is in China as it is in Semitic writing...Or in Germany...
But how this principle can be conceived and justified is very important and very different in each comtext ...
This principle can be derived from or abstracted from religious dogma or social demands.... In this case the unfree spirit receive it as a command to act ...Moral principle are posed then as universal and categorical imperatives... duty EXTERNAL to any free subject ... This moral principle is then INDEPENDANT of the thinking activity of each subject...
For an unfree spirit the link between a concept and a percept is given in advance, without his own thinking participation , the moral motives is imposed to the thinking process as a moral absraction... A duty...
In contrast a free subject can relate by his own intuitive and imaginative activity the concept and the percept , and here the motivation to act arise not as a duty , but as a free choice...
Kant inherited from the Cartesian dualism and introduced in science the distinction between the thing in itself and appearance...In a way Kant morality reflected the unfree nature of this imposed dualism...For Kant we dont know reality, we impose on it something... Qualities dont reflect reality but our own limitations..
In a non Kantian integral unitive perspective, which refuse dualism , it is moral imagination of EACH subject who create the motive to act...Not an external imposed category inherited from history , religions, or science... Here each free subject decide by his own activity what to do...The result of his action come from a free choice in his own thinking ability...There is no more any duty...Here free subject can know reality directly ... Qualities are real not illusions..
It is why there is a big difference when the same principle, do not do to others, is conceived as a social duty a categorical imperative inherited OUT OF REALITY by Kant and Confucius or conceived as an individual free choice by an awaken free thinker as Christ or Buddha created IN REALITY ...
And as to your postulated abolition of a private sphere: that is clearly each individual’s choice. Just the fact that some people are indiscriminate doesn’t warrant the abolition of one of the most fundamental human freedoms. Yes, there are corporations abusing the gullible, that however is a matter for regulation.
I never postulated or claim that the private sphere will be abolished, it is the frontier between the private and the public which is disturbed by modern communication...This perturbation is not created by random process but deliberately acted upon and used by entities that are immoral...
To be free man must be educated and trained to think by himself...This is this education for freedom which disapear ...Not the private sphere ....The private sphere is under CONTROL...
If we study the economical history, the pedagogical history and the medical history, we can observe a regression of the common goods in the name of profit and the complete control of man as a consumer, and the reduction of the free link between the doctor and his patient to an unfree "duty" programmed by external economical forces over the doctor freedom and over the patient freedom ...
Democracy is in complete regression...it is now a symbolic existence under the spell of ploutocratic lobbies... That is plain for all to see...