The podcast with Raz Zauber

Good afternoon,
In the podcast with Raz Zauber, you said that in your opinion, morality that is not backed by divine validity is seemingly morality without an anchor, because once a person establishes their values ​​and is not bound by any external objective standard, then morality can be flexible and reach basically anywhere.
You gave the example of normalizing incest.

Two questions about this:
1.
Apparently, even according to your system, morality is not something that is learned from the Torah and is a system separate from the Torah. So then, even according to your system, man is actually the one who observes alone and seeks morality and can actually interpret and think to the point of inadequacy.
Where is your anchor?
2.
Another point:
According to Professor David Enoch’s method, although there is no God behind morality, but rather ideas that are the external objective standard, (I know you disagree with him that this is not enough for a binding order), his morality is flexible and qualitative, just like your morality. It does not have the problem of decadence, right?
Because it is backed by an external objective scale.
?