This makes a lot of sense to me. It is my personal theory that the reptilian look is the look of a person who has engaged in dominant behavior constantly and for decades. Stephen Colbert comes to mind, I honestly recoil at his face and his beady little eyes. My instincts absolutely do not like Stephen Colbert and I think it is because of exactly what you are saying.

Enough to create a pattern meriting caution, at the least. But you don't even need to reach into the spiritual level, it's literally skin-deep: There are a million ways to improve your own looks. Some are intensive, but many are not.

Smiling strains the cheek muscles. Muscle strain leads to muscle growth. Someone who smiles a lot, even at rest, can be told apart from one who scowls. The soy face does not strain the cheeks in the same way, their faces shall be marked by the joyless. Laugh lines, as they're called, vs crow's feet in terms of wrinkles, even the aged have signs of joy in their lives versus hate.

But beyond smiling exercises, even simpler things too. In example: I have eczema. I use creams to fix and cover it up. This implies I care about my own health, and about societal images and stability. Alternate universe me has eczema, but broadcasts it, even agitates it to make it uglier: This implies AU me doesn't care about health, and actively seeks to destabilize society in some minor way. Perhaps not enough to brand AU me a bad person, but enough to merit caution.

There are some who can't help it, severe burn victims and the like. But just as it is said you can learn a lot about someone by their shoes, so too can you by merely examining skin-deep reflections.