Interesting concept but here are some things that can be drawn from a "reverse beauty standard".
You are born ugly and become more beautiful as you age.
The majority of ppl would be late bloomers, and not start to become attractive till their late 30's.
Birth marks would literally become beauty marks.
PPl are most attractive when they are physically ill.
Scares, legions, burns, deformities, ect. would be attractive and might result in a culture of self harm/mutilation for beauty, similar to the practice of foot binding.
This series looks like it is taking it a light hearted approach, but I will keep an eye out for fish hook piercings, freckle tattoos, and fake warts.