Well, I don't have to see the OP's picture of nude teens dancing because I've lived it.
I am the father of 2 teenage boys (17 & 14). My wife and I have raised them with a healthy respect and reverence for the human body as a supreme creation of God. We have also raised them in an atmosphere where nudity is acceptable and not inexorably linked with sex.
Part of our vacation time every year includes one or more nudist resorts. While there we swim, eat, play games and soak in the hot tub. Many of these resorts also have dances at scheduled times (with a D. J. or band), and our kids love those. Many also have karaoke nights, usually open to everyone.
All this takes place amid hundreds of other people, all without clothes.
This sounds much more erotic than it actually is, and therin lies much of its value.
Popular wisdom holds that allowing teenagers to participate in nudism is similar to pouring gasoline onto a fire.
In fact, it is more akin to clearing away flammable material with a backfire, using a small, controlled fire to remove fuel before the uncontrolled fire can reach it. In addition to its many other benefits, nudism "clears away" society's pornographic view of nudity, helping teens (and everyone else) to manage their natural curiosity and restrain their sexual impulses.
By demonstrating that the rules of good behavior apply with or without clothes, the teens learn that self-control depends on them, not on whether or not they (or anyone else) have clothes on.
They also learn what all kinds of people look like at all ages and stages of life, including scars and stretch marks, thin and fat, old and young, in all sizes, shapes and colors. It's all real; not airbrushed fantasies.
What provokes lust is specific to the individual and their culture. To my family and me, a room full of nude people gyrating to music is interesting and fun, but not lustful. We do not anticipate having sexual relations with any of them; we know that's not going to happen.
There is something very reassuring about watching your kids waiting for the waterslide, lined up with others of both sexes and all ages, all of them nude, but acting like ladies and gentlemen, with no improper behavior.
Would a typical swimsuited crowd of teenagers be this polite and mannerly? I doubt it.
As for some of the Biblical passages:
Chapter 16 in Ezekiel is an allegory of the Jewish nation, first as a helpless infant, then as a youthful virgin, then as a wife to God who becomes unfaithful. Nakedness is used first as a symbol of helplessness, then innocence and beauty, then debauchery and shame. This chapter has nothing to do with forbidding or permitting nudity.
God never commanded Adam & Eve to wear clothes. The fig leaves were their idea, and their shame incurred God's rebuke ("Who told you that you were naked?"). He had made them nude, and declared His creation "very good"
By the way, He still sends all of His creatures (including humans) into the world nude.
When He drove them out of the garden for their disobedience, He made clothing of animal skins for them, for two reasons:
(1) protection from the "thorns and thistles" of the curse, as well as cold and abrasion (leather and fur are still among the best known protections for these hazards)
(2) to establish the idea that only the killing of a sacrificial animal would atone for sin (pointing the way to Jesus's future sacrificial death.)
By the way, some nudist resorts have chapels, even regular Christian church services.
And yes, everyone (including the preacher) is nude. And it works fine.