First, your question is out of standard form. Because you asking if "people would be agree on this or not , then you ask at the end "do you find it sad" just like you're not asking something but representing a fact, and you asking if that fact is sad or not!!! What you said is not a fact so there's nothing to be sad about.
No i don't think it that way & that have nothing to do with it. So there's no sadness in here either.
Some women might jealous of another. Only "some" & they have their own personal reasoning & character for it. ( i don't like jealousy & those who jealous at all)
Women's appearance insecurity has several reasons. But other's looks & appearance has nothing to do with it.
Who qualified to tell who's prettier than who ? You ? Me ? Nobody is qualified for that. We call someone beautiful as our own preference. There's no term of calling someone good looking, everyone are good looking. Everyone has their own unique style & appearance. What we express is our personal preference,opinion,desire, & fave, that's all. There's no general rule for being "good looking" so someone be like "hey other's looking better" i look good in my own way, someone else looking good on their own way. That's what life is about.
-Woman's appearance insecurity comes from "Men" behavior.
"Women is reflection of what men do" , wrong expectations, wrong views, perspectives, words, behaves ect . . .makes women struggle accepting themselves & liking how they look. There's no term of being attractive, such terms created by small minded man that effected woman's mind by time.
Being like that , being like this, having a size like that, having a size like this, i need to make here bigger, i need to make here smaller, i need to make there longer, i need to make here shorter . ..
In the last news i've had, only 2 % of women in a world-average are happy about their looks. That's because as a girl start to grow see the way others expecting, looking, seeing & talking about a female's appearance. And that effects someone's mind & make a women to be insecure & think about "if they are good looking ? If they are attractive enough ? If they are a real female ? .. . Wrong thoughts, a wrong insecurity because of inappropriate expectations of other people specially men.
We are who we are, take it or leave it. (we need to work months to make a girl to realize their values and the meaning and confident behind this sentence.
-Other reason of insecurity is being uneducated about how TV,Media,Magazines & shoots works. Some people watch magazine shootings & think, omg what a skin color, what a face .. That's not fake but 1.it's not well explained . . 2.the person also won't look for it. So as fast as they a woman in magazine, they get insecure that "if they are ideal in skin of a woman in compare of what they seeing. But they don't understand that women in magazine covered with flashlights,highlights, HD cameras with highest zoom clearness technology, and being surrounded by white-fabric reflections and make up/beauty products over their body. So this is a "shooting" it need to become worked out & prefect, it's a "profession" & it suppose to be watched by "millions of people" so it's different & far from a "typical" family picture taking. And if the same girl who watching those magazines and go under those lights & flashes they will look as great as the one they seeing. But they don't go to earn it's knowledge but they start quickly to question themselves & get insecure.
If any women in the world get insecure of their looks because they jealous of others, it's because of people like you who would call some "Certain shapes" beautiful & call them "looking better than others" so those "others" would jealous cause they would think "what i have less than other girls that they get to be called beautiful & be in center of attention but not me ?" no reason, the only guild that girl committed is to stuck in a world with bunch of small minded people. That's all.
And several other reasons . . . .