A What is Being Realistic:
- Reality is All-there-is.
All-there-is includes all human beings.
Therefore, Reality cannot be absolutely independent of humans*.
or
Therefore, Humans are Intricately Part & Parcel of Reality [all there is]
B: Philosophical Realism
* for those who are pedantic with the term 'mind' refer the alternative, i.e. human conditions.Philosophical Realism is .... about a certain kind of thing is the thesis that this kind of thing has mind*-independent existence, i.e. that it is not just a mere appearance in the eye of the beholder.[1][2][3]
This includes a number of positions within epistemology and metaphysics which express that a given thing instead exists independently of knowledge, thought, or understanding.
Realism can also be a view about the properties of reality in general, holding that reality exists independent of the mind.
Realists tend to believe that whatever we believe now is only an approximation of reality but that the accuracy and fullness of understanding can be improved.
Metaphysical Realism maintains that "whatever exists does so, and has the properties and relations it does, independently of deriving its existence or nature from being thought of or experienced."
https://en.wikipedia.org/wiki/Philosophical_realism
Since Philosophical Realism claims that reality is independent of human conditions, it contradict A above, thus Philosophical Realism is not realistic, i.e. illusory in the ultimate sense.
Realists like PH & Gang adopt the ideology of Philosophical Realism [illusory], they believe that objective facts exist independent of the human conditions [for others, it is mind-independence].
To them all moral matters are opinions, beliefs and judgments which are connected with the human conditions [i.e. mind-dependent].
Since these moral matters are not independent of the human conditions, they [all] cannot be objective moral facts.
As such, morality cannot be objective. [C]
Since PH's claim 'morality cannot be objective' [C] is based on an illusory premise, his claim is 'morality cannot be objective', thus unsound.
On the other hand, I claim,
- 1. Humans are Intricately Part & Parcel of Reality [all there is]
2. All facts of reality are conditioned upon a specific FSK sustained by a collective of subjects not ONE subject - thus objective.
3. Moral facts are conditioned upon a moral FSK.
4. Therefore, morality is objective.