Daniela: ”which we thus learn it’s indeed an intrinsec and essential property and not simply an outward cover or a screen which hides reality”
I do not think you can be more incorrect. A princess once asked a chashuv rav why Hashem had created him so ugly. He told her to put her wine in golden jars instead of wooden ones. She did and it went bad. We see that sometimes being attractive externally will cause the internal to spoil.