Actually, poetry is not "pretentious bullshit," not any more than any other art form. If you don't understand it, then it may seem pretentious, and, certainly, bad poetry can be pretentious or BS (as with any other art form), but the art of poetry itself is no more pretentious than any other art form--music, theatre, film, novels, the visual arts, etc. What I glean from this thread is that most people have little understanding of poetry and how it works. That's poor teaching as far as I am concerned. Poetry is very much like music; in fact, poetry is the original basis of what we now know as music, both in lyrics and rhythm: music and theatre originated from the poems and chants of primitive peoples in every culture all over the world. The origin of today's music is the poetry of earlier people. It isn't pretentious and it isn't BS. If you truly understood poetry, you would understand that.
This 'ode' was written in the 5th century BC, (the Golden Age of Greek culture) by Sophocles, in the play
Antigone. It is a choral 'ode,' essentially a chant, but it is poetry and is the kind of thing that is the origin of modern music ~ rhythm, sound, and lyrics. Also, as an example, it is similar to the type of topic the OP put in the orignial post: a poem or ode expressing thoughts on the greatness of man as those poems were to express thoughts on the greatness (or lack of) of America.
This is the most famous choral ode in all of Greek tragedy. It is popularly referred to as the "Ode to Man." In this ode the Chorus sings about all the wonderful accomplishments of man. An 'ode' is one of the forms of modern poetry, which includes lyric poetry, narrative poetry, sonnets, eulogies, ballads, etc.
"Many wonders there be, but naught more wondrous than man;
Over the surging sea, with a whitening south wind wan,
Through the foam of the firth, man makes his perilous way;
And the eldest of deities Earth that knows not toil nor decay
Ever he furrows and scores, as his team, year in year out,
With breed of the yoked horse, the ploughshare turneth about.
The light-witted birds of the air, the beasts of the weald and the wood
He traps with his woven snare, and the brood of the briny flood.
Master of cunning he: the savage bull, and the hart
Who roams the mountain free, are tamed by his infinite art;
And the shaggy rough-maned steed is broken to bear the bit.
Speech and the wind-swift speed of counsel and civic wit,
He hath learnt for himself all these; and the arrowy rain to fly
And the nipping airs that freeze, 'neath the open winter sky.
He hath provision for all: fell plague he hath learnt to endure;
Safe whate'er may befall: yet for death he hath found no cure.
Passing the wildest flight thought are the cunning and skill,
That guide man now to the light, but now to counsels of ill.
If he honors the laws of the land, and reveres the Gods of the State
Proudly his city shall stand; but a cityless outcast I rate
Whoso bold in his pride from the path of right doth depart;
Ne'er may I sit by his side, or share the thoughts of his heart."
Does anyone see the difference in poetic quality between this and those poems the OP put forth as 'poetry'?
Take any of the lyrics of the Beatles, Simon & Garfunkel, and any other modern musicians, including rappers, and what you have is poetry set to music. It's all poetry, though generally far simpler than what we consider 'serious' poetry or literature, but not always. Sometimes the lyrics of modern pop musicians are as many layered and intriguing as any modern poet. You may scoff at what you don't understand, but that only makes clear it is your lack of understanding which is the problem.